diff --git a/src/errors.rs b/src/errors.rs
index 5c24d11..1c99bc9 100644
--- a/src/errors.rs
+++ b/src/errors.rs
@@ -27,23 +27,34 @@ pub enum RunError {
     InvalidExpressionUnknownOperator(String),
     AttemptToInsertHashOrStringInst,
     AttemptToInsertEmptyConst,
-    AttemptToInsertALabel
+    AttemptToInsertALabel,
 }
 
 impl Display for RunError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            RunError::RequestArgsInMainModule => write!(f, "Can't require arguments in the main module"),
-            RunError::ExecuteItself(mod_name) => write!(f, "Module {}: Can't execute itself", mod_name),
+            RunError::RequestArgsInMainModule => {
+                write!(f, "Can't require arguments in the main module")
+            }
+            RunError::ExecuteItself(mod_name) => {
+                write!(f, "Module {}: Can't execute itself", mod_name)
+            }
             RunError::FailToReadFile => write!(f, "Unable to read file"),
             RunError::FailToGetCharFromConsole => write!(f, "Failed to get character from console"),
-            RunError::InvalidInputUShortInt => write!(f, "Invalid input. Please enter a valid unsigned short integer"),
+            RunError::InvalidInputUShortInt => write!(
+                f,
+                "Invalid input. Please enter a valid unsigned short integer"
+            ),
             RunError::PickTooDeep => write!(f, "Picking too deep"),
             RunError::PickOutOfBounds => write!(f, "Trying to get a value out of bounds"),
             RunError::FailToReadLineFromConsole => write!(f, "Failed to read line from console"),
             RunError::UnknownLabel(label_name) => write!(f, "Unknown label: {}", label_name),
-            RunError::InvalidExpressionUnknownOperator(name) => write!(f, "Invalid expression: unknown operator '{}'", name),
-            RunError::AttemptToInsertHashOrStringInst => write!(f, "Attempt to insert a hash/string-instruction"),
+            RunError::InvalidExpressionUnknownOperator(name) => {
+                write!(f, "Invalid expression: unknown operator '{}'", name)
+            }
+            RunError::AttemptToInsertHashOrStringInst => {
+                write!(f, "Attempt to insert a hash/string-instruction")
+            }
             RunError::AttemptToInsertEmptyConst => write!(f, "Attempt to insert an empty constant"),
             RunError::AttemptToInsertALabel => write!(f, "Attempt to insert a label"),
         }
@@ -51,13 +62,17 @@ impl Display for RunError {
 }
 
 pub enum ParseError {
-    ArgumentNotRequired(String, usize, String)
+    ArgumentNotRequired(String, usize, String),
 }
 
 impl Display for ParseError {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         match self {
-            ParseError::ArgumentNotRequired(name, line_number, line) => write!(f, "ParseError:\n{1} | {2}\nerror: string argument for {0} not required", name, line_number, line),
+            ParseError::ArgumentNotRequired(name, line_number, line) => write!(
+                f,
+                "ParseError:\n{1} | {2}\nerror: string argument for {0} not required",
+                name, line_number, line
+            ),
         }
     }
-}
\ No newline at end of file
+}
diff --git a/src/execute.rs b/src/execute.rs
index 1f91f90..3691d44 100644
--- a/src/execute.rs
+++ b/src/execute.rs
@@ -1,10 +1,13 @@
-use crate::{instructions, stack::{Instruction, Stack, StackVec}};
+use crate::{
+    instructions,
+    stack::{Instruction, Stack, StackVec},
+};
 
 fn find_labels(stack: &mut Stack) {
     while stack.program_counter < (stack.program.len() as u16) {
         let label = &stack.program[stack.program_counter as usize];
         stack.program_counter += 1;
-        
+
         if !label.name.starts_with('@') {
             continue;
         }
@@ -30,7 +33,7 @@ fn find_prefix_operators(instruction: &mut Instruction, memory: &mut StackVec) {
         Some('|') => {
             instruction.name = instruction.name.chars().skip(1).collect();
             instruction.data = memory.pop();
-        },
+        }
         Some('^') => {
             instruction.name = instruction.name.chars().skip(1).collect();
 
@@ -60,84 +63,113 @@ pub fn execute(stack: &mut Stack, mut origin_stack: Option<&mut Stack>, mod_name
 
         match instruction.name.as_str() {
             // Stack operations
-            "push" => instructions::push::push(&mut stack.memory, instruction.data),
-            "pop"  => instructions::pop::pop(&mut stack.memory),
-            "dup"  => instructions::dup::dup(&mut stack.memory),
-            "swap" => instructions::swap::swap(&mut stack.memory),
-            "pick" => instructions::pick::pick(&mut stack.memory, instruction.data),
+            "push" => instructions::stack_manage::push(&mut stack.memory, instruction.data),
+            "pop" => instructions::stack_manage::pop(&mut stack.memory),
+            "dup" => instructions::stack_manage::dup(&mut stack.memory),
+            "swap" => instructions::stack_manage::swap(&mut stack.memory),
+            "pick" => instructions::stack_manage::pick(&mut stack.memory, instruction.data),
 
-            // Math
-            "add" => instructions::add::add(&mut stack.memory),
-            "sub" => instructions::sub::sub(&mut stack.memory),
-            "mul" => instructions::mul::mul(&mut stack.memory),
-            "div" => instructions::div::div(&mut stack.memory),
-            "mod" => instructions::modulo::modulo(&mut stack.memory),
+            // Math operations
+            "add" => instructions::math::add(&mut stack.memory),
+            "sub" => instructions::math::sub(&mut stack.memory),
+            "mul" => instructions::math::mul(&mut stack.memory),
+            "div" => instructions::math::div(&mut stack.memory),
+            "mod" => instructions::math::modulo(&mut stack.memory),
 
             // Logic
-            "and"   => instructions::and::and(&mut stack.memory),
-            "or"    => instructions::or::or(&mut stack.memory),
-            "xor"   => instructions::xor::xor(&mut stack.memory),
-            "nand"  => instructions::nand::nand(&mut stack.memory),
-            "not"   => instructions::not::not(&mut stack.memory),
+            "and" => instructions::logic::and(&mut stack.memory),
+            "or" => instructions::logic::or(&mut stack.memory),
+            "xor" => instructions::logic::xor(&mut stack.memory),
+            "nand" => instructions::logic::nand(&mut stack.memory),
+            "not" => instructions::logic::not(&mut stack.memory),
 
             // Bitwise
-            "band"  => instructions::band::band(&mut stack.memory),
-            "bor"   => instructions::bor::bor(&mut stack.memory),
-            "bxor"  => instructions::bxor::bxor(&mut stack.memory),
-            "bnand" => instructions::bnand::bnand(&mut stack.memory),
-            "bnot"   => instructions::not::not(&mut stack.memory),
+            "band" => instructions::bitwise::band(&mut stack.memory),
+            "bor" => instructions::bitwise::bor(&mut stack.memory),
+            "bxor" => instructions::bitwise::bxor(&mut stack.memory),
+            "bnand" => instructions::bitwise::bnand(&mut stack.memory),
+            "bnot" => instructions::logic::not(&mut stack.memory),
 
-            // Labels
-            "jmp"  => instructions::jmp::jmp(&mut stack.labels, &mut stack.program_counter, instruction.data),
-            "rjmp" => instructions::rjmp::rjmp(&mut stack.memory, &mut stack.labels, &mut stack.program_counter),
-            "jnz"  => instructions::jnz::jnz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, instruction.data),
-            "jz"   => instructions::jz::jz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, instruction.data),
-            "kjnz" => instructions::kjnz::kjnz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, instruction.data),
-            "kjz"  => instructions::kjz::kjz(&mut stack.memory, &mut stack.labels, &mut stack.program_counter, instruction.data),
+            // Flow-control
+            "jmp" => instructions::flow_control::jmp(
+                &mut stack.labels,
+                &mut stack.program_counter,
+                instruction.data,
+            ),
+            "rjmp" => instructions::specific::rjmp(
+                &mut stack.memory,
+                &mut stack.labels,
+                &mut stack.program_counter,
+            ),
+            "jnz" => instructions::flow_control::jnz(
+                &mut stack.memory,
+                &mut stack.labels,
+                &mut stack.program_counter,
+                instruction.data,
+            ),
+            "jz" => instructions::flow_control::jz(
+                &mut stack.memory,
+                &mut stack.labels,
+                &mut stack.program_counter,
+                instruction.data,
+            ),
+            "kjnz" => instructions::flow_control::kjnz(
+                &mut stack.memory,
+                &mut stack.labels,
+                &mut stack.program_counter,
+                instruction.data,
+            ),
+            "kjz" => instructions::flow_control::kjz(
+                &mut stack.memory,
+                &mut stack.labels,
+                &mut stack.program_counter,
+                instruction.data,
+            ),
 
             // Input/Output
-            "putc"     => instructions::putc::putc(&mut stack.memory),
-            "getc"     => instructions::getc::getc(&mut stack.memory),
-            "scan"     => instructions::scan::scan(&mut stack.memory),
-            "meow"     => instructions::meow::meow(&mut stack.memory),
-            "#print"   => instructions::print::print(instruction.arg.clone()),
-            "$print"   => instructions::print::print(instruction.arg.clone()),
-            "#println" => instructions::println::println(instruction.arg.clone()),
-            "$println" => instructions::println::println(instruction.arg.clone()),
+            "putc" => instructions::io::putc(&mut stack.memory),
+            "getc" => instructions::io::getc(&mut stack.memory),
+            "scan" => instructions::io::scan(&mut stack.memory),
+            "meow" => instructions::io::meow(&mut stack.memory),
+            "#print" => instructions::io::print(instruction.arg.clone()),
+            "$print" => instructions::io::print(instruction.arg.clone()),
+            "#println" => instructions::io::println(instruction.arg.clone()),
+            "$println" => instructions::io::println(instruction.arg.clone()),
 
             // Modules
-            "args"  => instructions::args::args(&mut stack.memory, &mut origin_stack, instruction.data),
+            "args" => {
+                instructions::modules::args(&mut stack.memory, &mut origin_stack, instruction.data)
+            }
             "#exec" => {
                 let arg = instruction.arg.clone();
-                instructions::exec::exec(stack, arg, mod_name.clone())
-            },
-            
+                instructions::modules::exec(stack, arg, mod_name.clone())
+            }
+
             // Self-modifying
-            
             "#insert" => {
                 let arg = instruction.arg.clone();
                 let data = instruction.data.clone();
-                instructions::insert::insert(&mut stack.program, arg, data)
-            },
+                instructions::self_modify::insert(&mut stack.program, arg, data)
+            }
 
             // Special
-            "dump"    => instructions::dump::dump(&mut stack.memory),
-            "size"    => instructions::size::size(&mut stack.memory),
-            "maxsize" => instructions::maxsize::maxsize(&mut stack.memory),
-            "#expr"   => instructions::expr::expr(&mut stack.memory, instruction.arg.clone()),
-            "nop"     => continue,
-            "quit"    => break,
-            "exit"    => instructions::exit::exit(instruction.data),
+            "dump" => instructions::special::dump(&mut stack.memory),
+            "size" => instructions::special::size(&mut stack.memory),
+            "maxsize" => instructions::special::maxsize(&mut stack.memory),
+            "#expr" => instructions::special::expr(&mut stack.memory, instruction.arg.clone()),
+            "nop" => continue,
+            "quit" => break,
+            "exit" => instructions::special::exit(instruction.data),
 
             // Platform-specific
-            #[cfg(target_family = "unix")] 
-            "_unix_random" => instructions::_unix_random::_unix_random(&mut stack.memory),
+            #[cfg(target_family = "unix")]
+            "_unix_random" => instructions::platform_specific::_unix_random(&mut stack.memory),
 
-            #[cfg(not(target_family = "unix"))] 
-            "_unix_random" => instructions::random::random(&mut stack.memory),
+            #[cfg(not(target_family = "unix"))]
+            "_unix_random" => instructions::specific::random(&mut stack.memory),
 
             // Labast-specific
-            "random" => instructions::random::random(&mut stack.memory),
+            "random" => instructions::specific::random(&mut stack.memory),
 
             _ => {
                 eprintln!("Unknown instruction: {}", instruction.name);
diff --git a/src/instructions/add.rs b/src/instructions/add.rs
deleted file mode 100644
index 6cd35bf..0000000
--- a/src/instructions/add.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn add(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(a + b);
-}
\ No newline at end of file
diff --git a/src/instructions/and.rs b/src/instructions/and.rs
deleted file mode 100644
index 5e97bb1..0000000
--- a/src/instructions/and.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn and(memory: &mut StackVec) {
-    let a: bool = memory.pop() == 1;
-    let b: bool = memory.pop() == 1;
-
-    let c: u16 = if a && b {
-        1
-    } else {
-        0
-    };
-
-    memory.push(c);
-}
\ No newline at end of file
diff --git a/src/instructions/args.rs b/src/instructions/args.rs
deleted file mode 100644
index d8140e6..0000000
--- a/src/instructions/args.rs
+++ /dev/null
@@ -1,18 +0,0 @@
-use crate::{errors::RunError, stack::{Stack, StackVec}};
-
-pub fn args(memory: &mut StackVec, origin_stack: &mut Option<&mut Stack>, data: u16) {
-    if let Some(origin_stack) = origin_stack.as_mut() {
-        let mut data = data;
-
-        if data == 0 {
-            data = origin_stack.memory.pop();
-        }
-
-        for _ in 0..data {
-            memory.push(origin_stack.memory.pop());
-        }
-    } else {
-        eprintln!("{}", RunError::RequestArgsInMainModule);
-        std::process::exit(2);
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/band.rs b/src/instructions/band.rs
deleted file mode 100644
index a128209..0000000
--- a/src/instructions/band.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn band(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(a & b);
-}
diff --git a/src/instructions/bitwise.rs b/src/instructions/bitwise.rs
new file mode 100644
index 0000000..24f99d3
--- /dev/null
+++ b/src/instructions/bitwise.rs
@@ -0,0 +1,29 @@
+use crate::stack::StackVec;
+
+pub fn band(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(a & b);
+}
+
+pub fn bor(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(a | b);
+}
+
+pub fn bxor(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(a ^ b);
+}
+
+pub fn bnand(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(!(a & b));
+}
diff --git a/src/instructions/bnand.rs b/src/instructions/bnand.rs
deleted file mode 100644
index ea948f3..0000000
--- a/src/instructions/bnand.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn bnand(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(!(a & b));
-}
diff --git a/src/instructions/bor.rs b/src/instructions/bor.rs
deleted file mode 100644
index 53a208c..0000000
--- a/src/instructions/bor.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn bor(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(a | b);
-}
diff --git a/src/instructions/bxor.rs b/src/instructions/bxor.rs
deleted file mode 100644
index c3b061e..0000000
--- a/src/instructions/bxor.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn bxor(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(a ^ b);
-}
diff --git a/src/instructions/div.rs b/src/instructions/div.rs
deleted file mode 100644
index 4e1b888..0000000
--- a/src/instructions/div.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn div(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(b / a);
-}
\ No newline at end of file
diff --git a/src/instructions/dump.rs b/src/instructions/dump.rs
deleted file mode 100644
index 731fe45..0000000
--- a/src/instructions/dump.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn dump(memory: &mut StackVec) {
-    if memory.is_empty() {
-        println!("Stack is empty.");
-        return;
-    }
-
-    for (i, entry) in memory.iter().enumerate() {
-        println!("{0}: {1}", i, entry);
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/dup.rs b/src/instructions/dup.rs
deleted file mode 100644
index 9972e0e..0000000
--- a/src/instructions/dup.rs
+++ /dev/null
@@ -1,6 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn dup(memory: &mut StackVec) {
-    let data = memory.last();
-    memory.push(data);
-}
\ No newline at end of file
diff --git a/src/instructions/exit.rs b/src/instructions/exit.rs
deleted file mode 100644
index 5e9101a..0000000
--- a/src/instructions/exit.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub fn exit(data: u16) {
-    std::process::exit(data as i32);
-}
\ No newline at end of file
diff --git a/src/instructions/flow_control.rs b/src/instructions/flow_control.rs
new file mode 100644
index 0000000..ae39cb5
--- /dev/null
+++ b/src/instructions/flow_control.rs
@@ -0,0 +1,74 @@
+use crate::{errors::RunError, stack::StackVec};
+
+pub fn jmp(labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
+    if labels[data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(data));
+        std::process::exit(2);
+    }
+
+    *program_counter = (labels[data as usize].unwrap() - 1) as u16;
+}
+
+pub fn jnz(
+    memory: &mut StackVec,
+    labels: &mut [Option<i16>; 256],
+    program_counter: &mut u16,
+    data: u16,
+) {
+    if labels[data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(data));
+        std::process::exit(2);
+    }
+
+    if memory.pop() != 0 {
+        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
+    }
+}
+
+pub fn jz(
+    memory: &mut StackVec,
+    labels: &mut [Option<i16>; 256],
+    program_counter: &mut u16,
+    data: u16,
+) {
+    if labels[data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(data));
+        std::process::exit(2);
+    }
+
+    if memory.pop() == 0 {
+        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
+    }
+}
+
+pub fn kjnz(
+    memory: &mut StackVec,
+    labels: &mut [Option<i16>; 256],
+    program_counter: &mut u16,
+    data: u16,
+) {
+    if labels[data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(data));
+        std::process::exit(2);
+    }
+
+    if memory.last() != 0 {
+        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
+    }
+}
+
+pub fn kjz(
+    memory: &mut StackVec,
+    labels: &mut [Option<i16>; 256],
+    program_counter: &mut u16,
+    data: u16,
+) {
+    if labels[data as usize].is_none() {
+        eprintln!("{}", RunError::UnknownLabel(data));
+        std::process::exit(2);
+    }
+
+    if memory.last() == 0 {
+        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
+    }
+}
diff --git a/src/instructions/getc.rs b/src/instructions/getc.rs
deleted file mode 100644
index 01e071a..0000000
--- a/src/instructions/getc.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-use std::io::Read;
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn getc(memory: &mut StackVec) {
-    let char = std::io::stdin()
-        .bytes()
-        .next()
-        .and_then(|result| result.ok())
-        .map(|byte| byte as u16)
-        .expect(&format!("{}", RunError::FailToGetCharFromConsole));
-    
-    memory.push(char);
-}
\ No newline at end of file
diff --git a/src/instructions/io.rs b/src/instructions/io.rs
new file mode 100644
index 0000000..78bbcf7
--- /dev/null
+++ b/src/instructions/io.rs
@@ -0,0 +1,43 @@
+use crate::{errors::RunError, stack::StackVec};
+use std::io::Read;
+
+pub fn putc(memory: &mut StackVec) {
+    print!("{}", memory.pop() as u8 as char);
+}
+
+pub fn getc(memory: &mut StackVec) {
+    let char = std::io::stdin()
+        .bytes()
+        .next()
+        .and_then(|result| result.ok())
+        .map(|byte| byte as u16)
+        .expect(&format!("{}", RunError::FailToGetCharFromConsole));
+
+    memory.push(char);
+}
+
+pub fn scan(memory: &mut StackVec) {
+    let mut input = String::new();
+
+    std::io::stdin()
+        .read_line(&mut input)
+        .expect(&format!("{}", RunError::FailToReadLineFromConsole));
+
+    let num = input
+        .trim()
+        .parse()
+        .expect(&format!("{}", RunError::InvalidInputUShortInt));
+    memory.push(num);
+}
+
+pub fn meow(memory: &mut StackVec) {
+    println!("{}", memory.pop());
+}
+
+pub fn print(arg: String) {
+    print!("{}", arg);
+}
+
+pub fn println(arg: String) {
+    println!("{}", arg);
+}
diff --git a/src/instructions/jmp.rs b/src/instructions/jmp.rs
deleted file mode 100644
index cf8a418..0000000
--- a/src/instructions/jmp.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-use crate::errors::RunError;
-
-pub fn jmp(labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
-    if labels[data as usize].is_none() {
-        eprintln!("{}", RunError::UnknownLabel(data));
-        std::process::exit(2);
-    }
-
-    *program_counter = (labels[data as usize].unwrap() - 1) as u16;
-}
\ No newline at end of file
diff --git a/src/instructions/jnz.rs b/src/instructions/jnz.rs
deleted file mode 100644
index 59db119..0000000
--- a/src/instructions/jnz.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn jnz(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
-    if labels[data as usize].is_none() {
-        eprintln!("{}", RunError::UnknownLabel(data));
-        std::process::exit(2);
-    }
-
-    if memory.pop() != 0 {
-        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/jz.rs b/src/instructions/jz.rs
deleted file mode 100644
index 148de65..0000000
--- a/src/instructions/jz.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn jz(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
-    if labels[data as usize].is_none() {
-        eprintln!("{}", RunError::UnknownLabel(data));
-        std::process::exit(2);
-    }
-
-    if memory.pop() == 0 {
-        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/kjnz.rs b/src/instructions/kjnz.rs
deleted file mode 100644
index da9cca3..0000000
--- a/src/instructions/kjnz.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn kjnz(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
-    if labels[data as usize].is_none() {
-        eprintln!("{}", RunError::UnknownLabel(data));
-        std::process::exit(2);
-    }
-
-    if memory.last() != 0 {
-        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/kjz.rs b/src/instructions/kjz.rs
deleted file mode 100644
index 39deda3..0000000
--- a/src/instructions/kjz.rs
+++ /dev/null
@@ -1,12 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn kjz(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16, data: u16) {
-    if labels[data as usize].is_none() {
-        eprintln!("{}", RunError::UnknownLabel(data));
-        std::process::exit(2);
-    }
-
-    if memory.last() == 0 {
-        *program_counter = (labels[data as usize].unwrap() - 1) as u16;
-    }
-}
\ No newline at end of file
diff --git a/src/instructions/logic.rs b/src/instructions/logic.rs
new file mode 100644
index 0000000..3f036d1
--- /dev/null
+++ b/src/instructions/logic.rs
@@ -0,0 +1,45 @@
+use crate::stack::StackVec;
+
+pub fn and(memory: &mut StackVec) {
+    let a: bool = memory.pop() == 1;
+    let b: bool = memory.pop() == 1;
+
+    let c: u16 = if a && b { 1 } else { 0 };
+
+    memory.push(c);
+}
+
+pub fn or(memory: &mut StackVec) {
+    let a: bool = memory.pop() == 1;
+    let b: bool = memory.pop() == 1;
+
+    let c: u16 = if a || b { 1 } else { 0 };
+
+    memory.push(c);
+}
+
+pub fn xor(memory: &mut StackVec) {
+    let a: bool = memory.pop() == 1;
+    let b: bool = memory.pop() == 1;
+
+    let c: u16 = if !a != !b { 1 } else { 0 };
+
+    memory.push(c);
+}
+
+pub fn nand(memory: &mut StackVec) {
+    let a: bool = memory.pop() == 1;
+    let b: bool = memory.pop() == 1;
+
+    let c: u16 = if !(a && b) { 1 } else { 0 };
+
+    memory.push(c);
+}
+
+pub fn not(memory: &mut StackVec) {
+    let a: bool = memory.pop() == 1;
+
+    let c: u16 = if !a { 1 } else { 0 };
+
+    memory.push(c);
+}
diff --git a/src/instructions/math.rs b/src/instructions/math.rs
new file mode 100644
index 0000000..1dab88c
--- /dev/null
+++ b/src/instructions/math.rs
@@ -0,0 +1,36 @@
+use crate::stack::StackVec;
+
+pub fn add(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(a + b);
+}
+
+pub fn sub(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(b - a);
+}
+
+pub fn mul(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(b * a);
+}
+
+pub fn div(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(b / a);
+}
+
+pub fn modulo(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(b % a);
+}
diff --git a/src/instructions/maxsize.rs b/src/instructions/maxsize.rs
deleted file mode 100644
index ae9c57e..0000000
--- a/src/instructions/maxsize.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn maxsize(memory: &mut StackVec) {
-    memory.push(memory.size() as u16);
-}
\ No newline at end of file
diff --git a/src/instructions/meow.rs b/src/instructions/meow.rs
deleted file mode 100644
index 6ec244e..0000000
--- a/src/instructions/meow.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn meow(memory: &mut StackVec) {
-    println!("{}", memory.pop());
-}
\ No newline at end of file
diff --git a/src/instructions/mod.rs b/src/instructions/mod.rs
index dff22a4..a08c315 100644
--- a/src/instructions/mod.rs
+++ b/src/instructions/mod.rs
@@ -1,42 +1,11 @@
-pub mod push;
-pub mod pop;
-pub mod dup;
-pub mod swap;
-pub mod add;
-pub mod sub;
-pub mod mul;
-pub mod div;
-pub mod jmp;
-pub mod jnz;
-pub mod jz;
-pub mod pick;
-pub mod putc;
-pub mod getc;
-pub mod meow;
-pub mod dump;
-pub mod scan;
-pub mod exec;
-pub mod args;
-pub mod expr;
-pub mod size;
-pub mod exit;
-pub mod maxsize;
-#[cfg(target_family = "unix")]
-pub mod _unix_random;
-pub mod modulo;
-pub mod and;
-pub mod or;
-pub mod xor;
-pub mod nand;
-pub mod band;
-pub mod bor;
-pub mod bxor;
-pub mod bnand;
-pub mod not;
-pub mod kjnz;
-pub mod kjz;
-pub mod print;
-pub mod println;
-pub mod insert;
-pub mod random;
-pub mod rjmp;
\ No newline at end of file
+pub mod bitwise;
+pub mod flow_control;
+pub mod io;
+pub mod logic;
+pub mod math;
+pub mod modules;
+pub mod platform_specific;
+pub mod self_modify;
+pub mod special;
+pub mod specific;
+pub mod stack_manage;
diff --git a/src/instructions/exec.rs b/src/instructions/modules.rs
similarity index 50%
rename from src/instructions/exec.rs
rename to src/instructions/modules.rs
index d78f2ff..e869135 100644
--- a/src/instructions/exec.rs
+++ b/src/instructions/modules.rs
@@ -1,5 +1,22 @@
+use crate::{errors::RunError, execute, parse, stack::StackVec, Stack};
 use std::fs;
-use crate::{parse, execute, Stack, errors::RunError};
+
+pub fn args(memory: &mut StackVec, origin_stack: &mut Option<&mut Stack>, data: u16) {
+    if let Some(origin_stack) = origin_stack.as_mut() {
+        let mut data = data;
+
+        if data == 0 {
+            data = origin_stack.memory.pop();
+        }
+
+        for _ in 0..data {
+            memory.push(origin_stack.memory.pop());
+        }
+    } else {
+        eprintln!("{}", RunError::RequestArgsInMainModule);
+        std::process::exit(2);
+    }
+}
 
 pub fn exec(mut stack: &mut Stack, arg: String, mod_name: String) {
     if mod_name == arg {
@@ -16,4 +33,4 @@ pub fn exec(mut stack: &mut Stack, arg: String, mod_name: String) {
     for item in temp_stack.memory.iter() {
         stack.memory.push(*item);
     }
-}
\ No newline at end of file
+}
diff --git a/src/instructions/modulo.rs b/src/instructions/modulo.rs
deleted file mode 100644
index da26082..0000000
--- a/src/instructions/modulo.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn modulo(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(b % a);
-}
\ No newline at end of file
diff --git a/src/instructions/mul.rs b/src/instructions/mul.rs
deleted file mode 100644
index 6263c22..0000000
--- a/src/instructions/mul.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn mul(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(b * a);
-}
\ No newline at end of file
diff --git a/src/instructions/nand.rs b/src/instructions/nand.rs
deleted file mode 100644
index bf7e6ab..0000000
--- a/src/instructions/nand.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn nand(memory: &mut StackVec) {
-    let a: bool = memory.pop() == 1;
-    let b: bool = memory.pop() == 1;
-
-    let c: u16 = if !(a && b) {
-        1
-    } else {
-        0
-    };
-
-    memory.push(c);
-}
\ No newline at end of file
diff --git a/src/instructions/not.rs b/src/instructions/not.rs
deleted file mode 100644
index 05e6bf9..0000000
--- a/src/instructions/not.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn not(memory: &mut StackVec) {
-    let a: bool = memory.pop() == 1;
-    
-    let c: u16 = if !a {
-        1
-    } else {
-        0
-    };
-
-    memory.push(c);
-}
\ No newline at end of file
diff --git a/src/instructions/or.rs b/src/instructions/or.rs
deleted file mode 100644
index 01d53a5..0000000
--- a/src/instructions/or.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn or(memory: &mut StackVec) {
-    let a: bool = memory.pop() == 1;
-    let b: bool = memory.pop() == 1;
-
-    let c: u16 = if a || b {
-        1
-    } else {
-        0
-    };
-
-    memory.push(c);
-}
\ No newline at end of file
diff --git a/src/instructions/pick.rs b/src/instructions/pick.rs
deleted file mode 100644
index 0e9e297..0000000
--- a/src/instructions/pick.rs
+++ /dev/null
@@ -1,11 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn pick(memory: &mut StackVec, data: u16) {
-    if data > memory.len() as u16 {
-        eprintln!("{}", RunError::PickTooDeep);
-        std::process::exit(2);
-    }
-
-    let arg = memory.pop();
-    memory.push(*memory.get(memory.len() - (arg as usize) - 1).expect(&format!("{}", RunError::PickOutOfBounds)));
-}
\ No newline at end of file
diff --git a/src/instructions/_unix_random.rs b/src/instructions/platform_specific.rs
similarity index 79%
rename from src/instructions/_unix_random.rs
rename to src/instructions/platform_specific.rs
index c88e3de..790f073 100644
--- a/src/instructions/_unix_random.rs
+++ b/src/instructions/platform_specific.rs
@@ -1,6 +1,9 @@
-use std::fs::File;
-use std::io::Read;
+#[cfg(target_family = "unix")]
 use crate::stack::StackVec;
+#[cfg(target_family = "unix")]
+use std::fs::File;
+#[cfg(target_family = "unix")]
+use std::io::Read;
 
 #[cfg(target_family = "unix")]
 pub fn _unix_random(memory: &mut StackVec) {
@@ -11,4 +14,4 @@ pub fn _unix_random(memory: &mut StackVec) {
 
     let data = memory.pop();
     memory.push((u16::from_ne_bytes(buffer)) % (data - 1));
-}
\ No newline at end of file
+}
diff --git a/src/instructions/pop.rs b/src/instructions/pop.rs
deleted file mode 100644
index af94e27..0000000
--- a/src/instructions/pop.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn pop(memory: &mut StackVec) {
-    memory.pop();
-}
\ No newline at end of file
diff --git a/src/instructions/print.rs b/src/instructions/print.rs
deleted file mode 100644
index 8649fe9..0000000
--- a/src/instructions/print.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub fn print(arg: String) {
-    print!("{}", arg);
-}
\ No newline at end of file
diff --git a/src/instructions/println.rs b/src/instructions/println.rs
deleted file mode 100644
index 34be1aa..0000000
--- a/src/instructions/println.rs
+++ /dev/null
@@ -1,3 +0,0 @@
-pub fn println(arg: String) {
-    println!("{}", arg);
-}
\ No newline at end of file
diff --git a/src/instructions/push.rs b/src/instructions/push.rs
deleted file mode 100644
index 21664b7..0000000
--- a/src/instructions/push.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn push(memory: &mut StackVec, data: u16) {
-    memory.push(data);
-}
\ No newline at end of file
diff --git a/src/instructions/putc.rs b/src/instructions/putc.rs
deleted file mode 100644
index 06103e9..0000000
--- a/src/instructions/putc.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn putc(memory: &mut StackVec) {
-    print!("{}", memory.pop() as u8 as char);
-}
\ No newline at end of file
diff --git a/src/instructions/random.rs b/src/instructions/random.rs
deleted file mode 100644
index 192a644..0000000
--- a/src/instructions/random.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-use fastrand;
-use crate::stack::StackVec;
-
-pub fn random(memory: &mut StackVec) {
-    let data = memory.pop();
-    memory.push(fastrand::u16(..) % (data - 1));
-}
\ No newline at end of file
diff --git a/src/instructions/rjmp.rs b/src/instructions/rjmp.rs
deleted file mode 100644
index c3922d2..0000000
--- a/src/instructions/rjmp.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn rjmp(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16) {
-    let start = memory.pop() as usize;
-    let end   = memory.pop() as usize;
-    let rand  = fastrand::usize(start..end + 1);
-
-    *program_counter = (labels[rand].expect(&format!("{}", RunError::UnknownLabel(rand as u16))) - 1) as u16;
-}
\ No newline at end of file
diff --git a/src/instructions/scan.rs b/src/instructions/scan.rs
deleted file mode 100644
index 5144e48..0000000
--- a/src/instructions/scan.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-use crate::{errors::RunError, stack::StackVec};
-
-pub fn scan(memory: &mut StackVec) {
-    let mut input = String::new();
-
-    std::io::stdin().read_line(&mut input).expect(&format!("{}", RunError::FailToReadLineFromConsole));
-                
-    let num = input.trim().parse().expect(&format!("{}", RunError::InvalidInputUShortInt));
-    memory.push(num);
-}
\ No newline at end of file
diff --git a/src/instructions/insert.rs b/src/instructions/self_modify.rs
similarity index 86%
rename from src/instructions/insert.rs
rename to src/instructions/self_modify.rs
index 8f84829..ec75b49 100644
--- a/src/instructions/insert.rs
+++ b/src/instructions/self_modify.rs
@@ -2,25 +2,25 @@ use crate::{errors::RunError, stack::Instruction};
 
 pub fn insert(program: &mut Vec<Instruction>, arg: String, data: u16) {
     let args: Vec<char> = arg.chars().collect();
-    
+
     if args[0] == '#' || args[0] == '$' {
         eprintln!("{}", RunError::AttemptToInsertHashOrStringInst);
         std::process::exit(2);
     }
-    
+
     if args[0] == '\n' {
         eprintln!("{}", RunError::AttemptToInsertEmptyConst);
         std::process::exit(2);
     }
-    
+
     if args[0] == '@' || args[1] == ' ' {
         eprintln!("{}", RunError::AttemptToInsertALabel);
         std::process::exit(2);
     }
 
     program.push(Instruction {
-        name:  arg.to_string(),
-        arg:  "\n".to_string(),
-        data
+        name: arg.to_string(),
+        arg: "\n".to_string(),
+        data,
     });
-}
\ No newline at end of file
+}
diff --git a/src/instructions/size.rs b/src/instructions/size.rs
deleted file mode 100644
index d94225f..0000000
--- a/src/instructions/size.rs
+++ /dev/null
@@ -1,5 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn size(memory: &mut StackVec) {
-    memory.push(memory.len() as u16);
-}
\ No newline at end of file
diff --git a/src/instructions/expr.rs b/src/instructions/special.rs
similarity index 67%
rename from src/instructions/expr.rs
rename to src/instructions/special.rs
index b3c00de..b892739 100644
--- a/src/instructions/expr.rs
+++ b/src/instructions/special.rs
@@ -1,5 +1,24 @@
 use crate::{errors::RunError, stack::StackVec};
 
+pub fn dump(memory: &mut StackVec) {
+    if memory.is_empty() {
+        println!("Stack is empty.");
+        return;
+    }
+
+    for (i, entry) in memory.iter().enumerate() {
+        println!("{0}: {1}", i, entry);
+    }
+}
+
+pub fn size(memory: &mut StackVec) {
+    memory.push(memory.len() as u16);
+}
+
+pub fn maxsize(memory: &mut StackVec) {
+    memory.push(memory.size() as u16);
+}
+
 pub fn expr(memory: &mut StackVec, arg: String) {
     for code in arg.chars() {
         match code {
@@ -12,7 +31,7 @@ pub fn expr(memory: &mut StackVec, arg: String) {
             '\\' => {
                 let ax = memory.pop();
                 let ax2 = memory.pop();
-                
+
                 memory.push(ax);
                 memory.push(ax2);
             }
@@ -31,4 +50,8 @@ pub fn expr(memory: &mut StackVec, arg: String) {
             }
         }
     }
+}
+
+pub fn exit(data: u16) {
+    std::process::exit(data as i32);
 }
\ No newline at end of file
diff --git a/src/instructions/specific.rs b/src/instructions/specific.rs
new file mode 100644
index 0000000..00db330
--- /dev/null
+++ b/src/instructions/specific.rs
@@ -0,0 +1,16 @@
+use crate::{errors::RunError, stack::StackVec};
+use fastrand;
+
+pub fn random(memory: &mut StackVec) {
+    let data = memory.pop();
+    memory.push(fastrand::u16(..) % (data - 1));
+}
+
+pub fn rjmp(memory: &mut StackVec, labels: &mut [Option<i16>; 256], program_counter: &mut u16) {
+    let start = memory.pop() as usize;
+    let end = memory.pop() as usize;
+    let rand = fastrand::usize(start..end + 1);
+
+    *program_counter =
+        (labels[rand].expect(&format!("{}", RunError::UnknownLabel(rand as u16))) - 1) as u16;
+}
diff --git a/src/instructions/stack_manage.rs b/src/instructions/stack_manage.rs
new file mode 100644
index 0000000..a9201cf
--- /dev/null
+++ b/src/instructions/stack_manage.rs
@@ -0,0 +1,36 @@
+use crate::{errors::RunError, stack::StackVec};
+
+pub fn push(memory: &mut StackVec, data: u16) {
+    memory.push(data);
+}
+
+pub fn pop(memory: &mut StackVec) {
+    memory.pop();
+}
+
+pub fn dup(memory: &mut StackVec) {
+    let data = memory.last();
+    memory.push(data);
+}
+
+pub fn swap(memory: &mut StackVec) {
+    let a: u16 = memory.pop();
+    let b: u16 = memory.pop();
+
+    memory.push(a);
+    memory.push(b);
+}
+
+pub fn pick(memory: &mut StackVec, data: u16) {
+    if data > memory.len() as u16 {
+        eprintln!("{}", RunError::PickTooDeep);
+        std::process::exit(2);
+    }
+
+    let arg = memory.pop();
+    memory.push(
+        *memory
+            .get(memory.len() - (arg as usize) - 1)
+            .expect(&format!("{}", RunError::PickOutOfBounds)),
+    );
+}
diff --git a/src/instructions/sub.rs b/src/instructions/sub.rs
deleted file mode 100644
index 88e8713..0000000
--- a/src/instructions/sub.rs
+++ /dev/null
@@ -1,8 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn sub(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(b - a);
-}
\ No newline at end of file
diff --git a/src/instructions/swap.rs b/src/instructions/swap.rs
deleted file mode 100644
index 5ebba5b..0000000
--- a/src/instructions/swap.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn swap(memory: &mut StackVec) {
-    let a: u16 = memory.pop();
-    let b: u16 = memory.pop();
-
-    memory.push(a);
-    memory.push(b);
-}
\ No newline at end of file
diff --git a/src/instructions/xor.rs b/src/instructions/xor.rs
deleted file mode 100644
index 363bf69..0000000
--- a/src/instructions/xor.rs
+++ /dev/null
@@ -1,14 +0,0 @@
-use crate::stack::StackVec;
-
-pub fn xor(memory: &mut StackVec) {
-    let a: bool = memory.pop() == 1;
-    let b: bool = memory.pop() == 1;
-
-    let c: u16 = if !a != !b {
-        1
-    } else {
-        0
-    };
-
-    memory.push(c);
-}
\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index c8673f8..5091cb2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,15 +1,18 @@
-use std::{fs, io::{BufRead, Write}};
+use std::{
+    fs,
+    io::{BufRead, Write},
+};
 
 use errors::RunError;
 use execute::execute;
 use parse::parse;
 use stack::Stack;
 
-mod stack;
-mod parse;
+mod errors;
 mod execute;
 mod instructions;
-mod errors;
+mod parse;
+mod stack;
 
 const HELP: &str = "\
 labast - Labaski interpreter written in Rust.
@@ -39,9 +42,9 @@ fn main() {
         loop {
             line.clear();
             stack.program.clear();
-            
+
             let stdin = std::io::stdin();
-            
+
             print!("> ");
             std::io::stdout().flush().expect("Cannot flush the buffer.");
 
@@ -55,7 +58,17 @@ fn main() {
         let lines = fs::read_to_string(&input).expect(&format!("{}", RunError::FailToReadFile));
 
         parse(&mut stack, &lines);
-        execute(&mut stack, None, String::from(input.file_name().expect("Failed to read file name.").to_str().expect("Failed to convert file name to string")));
+        execute(
+            &mut stack,
+            None,
+            String::from(
+                input
+                    .file_name()
+                    .expect("Failed to read file name.")
+                    .to_str()
+                    .expect("Failed to convert file name to string"),
+            ),
+        );
     }
 }
 
@@ -74,12 +87,17 @@ fn parse_args() -> Result<AppArgs, pico_args::Error> {
     }
 
     if pargs.contains(["-v", "--version"]) {
-        println!("labast version {}", option_env!("CARGO_PKG_VERSION").unwrap_or("unknown"));
+        println!(
+            "labast version {}",
+            option_env!("CARGO_PKG_VERSION").unwrap_or("unknown")
+        );
         std::process::exit(0);
     }
 
     let args = AppArgs {
-        stack_size: pargs.opt_value_from_fn("--stack-size", parse_stack_size)?.unwrap_or(256),
+        stack_size: pargs
+            .opt_value_from_fn("--stack-size", parse_stack_size)?
+            .unwrap_or(256),
         input: pargs.opt_free_from_str()?,
     };
 
@@ -92,12 +110,14 @@ fn parse_args() -> Result<AppArgs, pico_args::Error> {
 }
 
 fn parse_stack_size(s: &str) -> Result<usize, &'static str> {
-    let number = s.parse().map_err(|_| "Argument for stack size is not a number");
-    
+    let number = s
+        .parse()
+        .map_err(|_| "Argument for stack size is not a number");
+
     if number > Ok(u16::MAX) {
         eprintln!("Stack size cannot be more than 65535");
         std::process::exit(2);
     }
 
     Ok(number?.into())
-}
\ No newline at end of file
+}
diff --git a/src/parse.rs b/src/parse.rs
index db340e7..075fff7 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -1,4 +1,7 @@
-use crate::{errors::ParseError, stack::{Instruction, Stack}};
+use crate::{
+    errors::ParseError,
+    stack::{Instruction, Stack},
+};
 
 pub fn parse(stack: &mut Stack, file_content: &str) {
     for (i, line) in file_content.lines().enumerate() {
@@ -13,26 +16,33 @@ pub fn parse(stack: &mut Stack, file_content: &str) {
             inst_line = line.trim().chars().collect();
         }
 
-        let command: [String; 2] = inst_line.split_once(char::is_whitespace)
-        .map_or_else(|| [inst_line.trim().to_string(), "".to_string()],
-        |(first, second)| [first.trim().to_string(), second.trim().to_string()]);
+        let command: [String; 2] = inst_line.split_once(char::is_whitespace).map_or_else(
+            || [inst_line.trim().to_string(), "".to_string()],
+            |(first, second)| [first.trim().to_string(), second.trim().to_string()],
+        );
 
-        let name: String;
+        let name: String = command[0].clone();
         let mut arg: String = String::new();
         let mut data: u16 = 0;
 
-        name = command[0].clone();
-
         if !command[1].is_empty() {
-            if name.chars().nth(0) == Some('#') || name.chars().nth(1) == Some('#') {    
-                let splited_data: Vec<String> = command[1].split_whitespace().map(String::from).collect();
+            if name.chars().nth(0) == Some('#') || name.chars().nth(1) == Some('#') {
+                let splited_data: Vec<String> =
+                    command[1].split_whitespace().map(String::from).collect();
                 arg = splited_data.get(0).unwrap().clone();
             } else if name.chars().nth(0) == Some('$') || name.chars().nth(1) == Some('$') {
                 arg = command[1].clone();
             } else if let Ok(number) = command[1].parse::<i32>() {
                 data = number as u16;
             } else {
-                eprintln!("{}", ParseError::ArgumentNotRequired(command[0].to_string(), i + 1, line.to_string()));
+                eprintln!(
+                    "{}",
+                    ParseError::ArgumentNotRequired(
+                        command[0].to_string(),
+                        i + 1,
+                        line.to_string()
+                    )
+                );
                 std::process::exit(2);
             }
         }
diff --git a/src/stack.rs b/src/stack.rs
index 121fce5..601be6b 100644
--- a/src/stack.rs
+++ b/src/stack.rs
@@ -6,14 +6,14 @@ use crate::errors::StackError;
 pub struct Instruction {
     pub name: String,
     pub arg: String,
-    pub data: u16
+    pub data: u16,
 }
 
 pub struct Stack {
     pub program: Vec<Instruction>,
     pub program_counter: u16,
     pub labels: [Option<i16>; 256],
-    pub memory: StackVec
+    pub memory: StackVec,
 }
 
 impl Stack {
@@ -22,14 +22,14 @@ impl Stack {
             program: Vec::new(),
             program_counter: 0,
             labels: [None; 256],
-            memory: StackVec::new(stack_size)
+            memory: StackVec::new(stack_size),
         };
     }
 }
 
 pub struct StackVec {
     data: Vec<u16>,
-    max_size: usize
+    max_size: usize,
 }
 
 impl StackVec {
@@ -53,11 +53,16 @@ impl StackVec {
     }
 
     pub fn pop(&mut self) -> u16 {
-        self.data.pop().expect(&format!("{}", StackError::StackUnderflow))
+        self.data
+            .pop()
+            .expect(&format!("{}", StackError::StackUnderflow))
     }
 
     pub fn last(&mut self) -> u16 {
-        *self.data.last().expect(&format!("{}", StackError::StackUnderflow))
+        *self
+            .data
+            .last()
+            .expect(&format!("{}", StackError::StackUnderflow))
     }
 }
 
@@ -67,4 +72,4 @@ impl Deref for StackVec {
     fn deref(&self) -> &Self::Target {
         &self.data
     }
-}
\ No newline at end of file
+}