diff --git a/lib/stdlib.h b/lib/stdlib.h
new file mode 100644
index 0000000..e69de29
diff --git a/lib/stdlib.rs b/lib/stdlib.rs
new file mode 100644
index 0000000..49d1a2c
--- /dev/null
+++ b/lib/stdlib.rs
@@ -0,0 +1,23 @@
+use std::alloc::{alloc, Layout};
+use std::ptr::null_mut;
+
+// Malloc
+pub fn _0x6d616c6c6f63(size: usize) -> *mut u8 {
+    if size == 0 {
+        return null_mut();
+    }
+
+    // Create a memory layout for the requested size
+    let layout = Layout::from_size_align(size, std::mem::align_of::<u8>()).unwrap();
+
+    // Allocate the memory
+    unsafe {
+        let ptr = alloc(layout);
+        if ptr.is_null() {
+            // Allocation failed
+            null_mut()
+        } else {
+            ptr
+        }
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 84b27aa..c4e23ce 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -13,7 +13,7 @@ fn main() {
         .about("The wyst compiler")
         .arg(
             Arg::with_name("file")
-                .required(true)
+                .required_unless_one(&["stdio", "hex"])
                 .help("Sets the input file to use"),
         )
         .arg(
@@ -35,10 +35,19 @@ fn main() {
                 .long("stdio")
                 .help("LSP Mode"),
         )
+        .arg(
+            Arg::with_name("hex")
+                .short('h')
+                .long("hex")
+                .takes_value(true)
+                .help("Turn an identifier into hex"),
+        )
         .get_matches();
-
     if matches.is_present("stdio") {
         println!("stdio mode!");
+    } else if matches.is_present("hex") {
+        let ident = matches.value_of("hex").unwrap().to_string();
+        println!("_0x{}", hex::encode(ident));
     } else {
         let file = matches.value_of("file").unwrap().to_string();
         let output = matches.value_of("output").unwrap_or("out").to_string();
diff --git a/src/transpiler.rs b/src/transpiler.rs
index 0e2959a..302eeff 100644
--- a/src/transpiler.rs
+++ b/src/transpiler.rs
@@ -68,6 +68,50 @@ pub fn to_indexable(pairs: Pairs<Rule>) -> Vec<Pair<Rule>> {
 }
 
 impl Transpiler {
+    pub fn encode_ident(&mut self, ident: &str) -> String {
+        match WystParser::parse(Rule::def_identifier, ident) {
+            Ok(parsed) => {
+                let mut output = String::new();
+                for pair in parsed {
+                    let tokens = to_indexable(pair.clone().into_inner());
+                    for t in tokens {
+                        match t.as_rule() {
+                            Rule::identifier => {
+                                let ident = t.as_str().trim();
+                                let ident_rs = format!("_0x{}", hex::encode(ident.as_bytes()));
+                                if self.mod_manager.macros.contains(&ident_rs) {
+                                    output += ident_rs.as_str();
+                                    output += "!";
+                                } else {
+                                    output += match ident {
+                                        "void" => "()",
+                                        "int" => "i32",
+                                        "float" => "f64",
+                                        "Vec" => "Vec",
+                                        _ => {
+                                            if self.mod_manager.map.contains_key(ident) {
+                                                self.mod_manager.map.get(ident).unwrap()
+                                            } else {
+                                                ident_rs.as_str()
+                                            }
+                                        }
+                                    };
+                                }
+                            }
+                            Rule::def_identifier => {
+                                output += "<";
+                                output += self.encode_ident(t.as_str()).as_str();
+                                output += ">";
+                            }
+                            _ => {}
+                        }
+                    }
+                }
+                output
+            }
+            Err(_) => String::new(),
+        }
+    }
     pub fn transpile_pairs(&mut self, pairs: Pairs<Rule>) -> String {
         let mut res = String::new();
         for pair in pairs {
@@ -119,7 +163,7 @@ impl Transpiler {
                 res += "#[allow(unused_imports)]\nuse ";
                 res += self
                     .mod_manager
-                    .add(tokens[0].as_str().to_string(), true)
+                    .add(&mut self.clone(), tokens[0].as_str().to_string(), true)
                     .as_str();
                 res += "::*;\n";
             }
@@ -127,24 +171,13 @@ impl Transpiler {
                 res += "#[allow(unused_imports)]\nuse ";
                 res += self
                     .mod_manager
-                    .add(tokens[0].as_str().to_string(), false)
+                    .add(&mut self.clone(), tokens[0].as_str().to_string(), false)
                     .as_str();
                 res += "::*;\n";
             }
 
             Rule::identifier | Rule::def_identifier => {
-                let ident = pair.as_str().trim();
-                let ident_rs = format!("_0x{}", hex::encode(ident.as_bytes()));
-                if self.mod_manager.macros.contains(&ident_rs) {
-                    res += ident_rs.as_str();
-                    res += "!";
-                } else {
-                    res += match ident {
-                        "void" => "()",
-                        "int" => "i32",
-                        _ => ident_rs.as_str(),
-                    };
-                }
+                res += self.encode_ident(pair.as_str().trim()).as_str();
             }
 
             Rule::call => {
@@ -183,6 +216,13 @@ impl Transpiler {
                 res += pair.as_str();
             }
 
+            Rule::map => {
+                self.mod_manager.map.insert(
+                    tokens[0].as_str().to_string(),
+                    tokens[2].as_str().to_string(),
+                );
+            }
+
             _ => {
                 res += " ";
                 res += pair.as_str();
diff --git a/src/utils.rs b/src/utils.rs
index 740fb1b..412d22f 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -1,9 +1,10 @@
-use std::fs;
-use std::path::Path;
 use crate::transpiler::{Rule, State, Transpiler, WystParser};
-use serde::{Deserialize, Serialize};
 use dirs::home_dir;
 use pest::Parser;
+use serde::{Deserialize, Serialize};
+use std::collections::HashMap;
+use std::fs;
+use std::path::Path;
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub enum ProblemType {
@@ -29,18 +30,23 @@ pub struct Problem {
 pub struct Module {
     pub rs_mod: String,
     pub file_path: String,
-    pub code: String
+    pub code: String,
 }
 
 #[derive(Debug, Clone)]
 pub struct ModManager {
     pub modules: Vec<Module>,
-    pub macros: Vec<String>
+    pub macros: Vec<String>,
+    pub map: HashMap<String, String>,
 }
 
 impl ModManager {
     pub fn new() -> ModManager {
-        ModManager {modules: Vec::new(), macros: Vec::new()}
+        ModManager {
+            modules: Vec::new(),
+            macros: Vec::new(),
+            map: HashMap::new(),
+        }
     }
     pub fn check(&mut self, path: String) -> Option<Module> {
         for module in self.modules.clone() {
@@ -50,37 +56,83 @@ impl ModManager {
         }
         None
     }
-    pub fn add(&mut self, file_path: String, global: bool) -> String {
+    pub fn add(&mut self, root: &mut Transpiler, file_path: String, global: bool) -> String {
         let mut problems: Vec<ProblemCap> = Vec::new();
         let mod_name = format!("mod_{}", self.modules.len());
         let home_dirpb = home_dir().unwrap();
         let home_dir = home_dirpb.to_str().unwrap();
         let mut file_path = file_path;
         if global {
-                let mut tmp = Path::new(home_dir).join("wyst").join("lib").join(file_path.clone()).to_str().unwrap().to_string();
-                if !Path::new(&tmp).exists() {
-                    tmp = Path::new("lib").join(file_path).to_str().unwrap().to_string();
-                }
-                file_path = tmp;
+            let mut tmp = Path::new(home_dir)
+                .join("wyst")
+                .join("lib")
+                .join(file_path.clone())
+                .to_str()
+                .unwrap()
+                .to_string();
+            if !Path::new(&tmp).exists() {
+                tmp = Path::new("lib")
+                    .join(file_path)
+                    .to_str()
+                    .unwrap()
+                    .to_string();
+            }
+            file_path = tmp;
         }
         if let Some(modl) = self.check(file_path.clone()) {
             return modl.rs_mod;
         }
         if let Ok(code) = fs::read_to_string(file_path.clone()) {
-            self.modules.push(Module { rs_mod: mod_name.clone(), file_path: file_path.clone(), code: code.clone() });
             match file_path.rsplit_once('.').unwrap_or(("", "")).1 {
-                "rs" => {
-                    match WystParser::parse(Rule::rust_code, &code) {
-                        Ok(parsed) => {
-                            for pair in parsed {
-                                for p in pair.into_inner() {
-                                    if p.as_rule() == Rule::rust_macro_lint {
-                                        self.macros.push(p.into_inner().as_str().to_string());
-                                    }
+                "rs" => match WystParser::parse(Rule::rust_code, &code) {
+                    Ok(parsed) => {
+                        self.modules.push(Module {
+                            rs_mod: mod_name.clone(),
+                            file_path: file_path.clone(),
+                            code: code.clone(),
+                        });
+                        for pair in parsed {
+                            for p in pair.into_inner() {
+                                if p.as_rule() == Rule::rust_macro_lint {
+                                    self.macros.push(p.into_inner().as_str().to_string());
                                 }
                             }
                         }
-                        Err(_) => {}
+                    }
+                    Err(_) => {}
+                },
+                "h" => {
+                    file_path = file_path.rsplit_once('.').unwrap_or(("", "")).0.to_string();
+                    file_path += ".rs";
+                    let parsed = WystParser::parse(Rule::header_expr, &code).unwrap();
+                    for pair in parsed {
+                        root.transpile_pairs(pair.into_inner());
+                    }
+                    self.map.extend(root.mod_manager.map.clone().into_iter());
+                    if let Ok(code1) = fs::read_to_string(file_path.clone()) {
+                        let parsed = WystParser::parse(Rule::rust_code, &code1).unwrap();
+                        self.modules.push(Module {
+                            rs_mod: mod_name.clone(),
+                            file_path: file_path.clone(),
+                            code: code1.clone(),
+                        });
+                        for pair in parsed {
+                            for p in pair.into_inner() {
+                                if p.as_rule() == Rule::rust_macro_lint {
+                                    self.macros.push(p.into_inner().as_str().to_string());
+                                }
+                            }
+                        }
+                    } else {
+                        problems.push(ProblemCap::Error(Problem {
+                            problem_msg: format!("Sub Header not found '{}'", file_path),
+                            problem_type: ProblemType::FileNotFound,
+                            state: State {
+                                line: 0,
+                                column: 0,
+                                file: None,
+                            },
+                        }))
                     }
                 }
                 _ => {}
@@ -109,18 +161,24 @@ impl ModManager {
                         ..Default::default()
                     };
                     let rust_code = trsp.transpile_code(module.code, 0).expect("");
-                    fs::write(Path::new("build").join((module.rs_mod+".rs").as_str()), rust_code).expect("Error writing rust file: ");
+                    fs::write(
+                        Path::new("build").join((module.rs_mod + ".rs").as_str()),
+                        rust_code,
+                    )
+                    .expect("Error writing rust file: ");
                     problems.append(&mut trsp.problems);
                     self.modules = trsp.mod_manager.modules;
                 }
 
-                "rs" => {
-                    fs::write(Path::new("build").join((module.rs_mod+".rs").as_str()), &module.code).unwrap()
-                }
+                "rs" => fs::write(
+                    Path::new("build").join((module.rs_mod + ".rs").as_str()),
+                    &module.code,
+                )
+                .unwrap(),
 
                 _ => {}
             }
         }
         problems
     }
-}
\ No newline at end of file
+}
diff --git a/src/wyst.pest b/src/wyst.pest
index aaa9c58..30df927 100644
--- a/src/wyst.pest
+++ b/src/wyst.pest
@@ -1,4 +1,4 @@
-WHITESPACE = _{ " " | "\t" | "\n" }
+WHITESPACE = _{ ("//" ~ (!"\n" ~ ANY)*) | ("/*" ~ (!"*/" ~ ANY)*) | " " | "\t" | "\n" }
 wspc = { " " | "\t" | "\n" }
 
 // [chars]
@@ -17,6 +17,7 @@ string = { "\"" ~ (raw_string | escape )* ~ "\"" }
 char = { "'" ~ (escape | ANY) ~ "'" }
 bool = @{"true" | "false"}
 keyword = @{"struct"}
+map = { "#" ~ "map" ~ identifier ~ comma ~ identifier }
 
 // [numbers]
 hex = @{ "0" ~ ("x"|"X") ~ ('0'..'9' | 'a'..'f' | 'A'..'F')*}
@@ -75,6 +76,11 @@ top_expr = {
         include |
         include_global |
         func_def |
-        struct_def
+        struct_def |
+        map
     )* ~ !ANY
 }
+
+header_expr = {
+  map*
+}