diff --git a/fonts/atwriter.ttf b/fonts/atwriter.ttf
deleted file mode 100644
index 41f9c33..0000000
Binary files a/fonts/atwriter.ttf and /dev/null differ
diff --git a/src/gui.rs b/src/gui.rs
index 2d1fb60..327e824 100644
--- a/src/gui.rs
+++ b/src/gui.rs
@@ -1,7 +1,8 @@
 use eframe::egui::{self};
-use eframe::epaint::text::{FontInsert, InsertFontFamily};
 use std::fs::File;
-use std::io::prelude::*;
+
+use crate::read_and_write;
+use read_and_write::{is_valid_file, save_action, string_translate};
 
 pub struct Omelt {
     file_name: String,
@@ -11,42 +12,43 @@ pub struct Omelt {
 
 impl Omelt {
     pub fn new(file_name: &str, file: File) -> Self {
-        Self {
+        let mut out = Self {
             file_name: file_name.to_owned(),
             text: "".to_owned(),
             file: file,
-        }
+        };
+        out.update_txt();
+        out
     }
     pub fn update_txt(&mut self) {
-        let _ = self.file.read_to_string(&mut self.text);
+        if is_valid_file(&mut self.file) {
+            self.text = string_translate(&mut self.file);
+        } else {
+            println!("File is not valid");
+        }
     }
 }
 
-fn add_font(ctx: &egui::Context) {
-    ctx.add_font(FontInsert::new(
-        "atwriter",
-        egui::FontData::from_static(include_bytes!("../fonts/atwriter.ttf")),
-        vec![
-            InsertFontFamily {
-                family: egui::FontFamily::Proportional,
-                priority: egui::epaint::text::FontPriority::Highest,
-            },
-            InsertFontFamily {
-                family: egui::FontFamily::Monospace,
-                priority: egui::epaint::text::FontPriority::Lowest,
-            },
-        ],
-    ))
-}
-
 impl eframe::App for Omelt {
     fn update(&mut self, ctx: &egui::Context, _frame: &mut eframe::Frame) {
-        self.update_txt();
-        add_font(ctx);
+        let save = KeyboardShortcut::new(egui::Key::S, Modifiers::CTRL);
         ctx.set_zoom_factor(2.0);
+        ctx.input(|i| {
+            //eprintln!("i = {:?}", i);
+            if save.matches(i) {
+                let _ = save_action(&self.text, &mut self.file);
+                println!("save");
+            }
+        });
         egui::CentralPanel::default().show(ctx, |ui| {
             ui.heading(&self.file_name);
+            if ui.add(egui::Button::new("Click me")).clicked() {
+                let _ = self.file.set_len(0);
+                let _ = save_action(&self.text, &mut self.file);
+                eprintln!("self.text = {:?}", self.text);
+            }
             egui::ScrollArea::vertical().show(ui, |ui| {
+                //let visible_text = self.text.lines().take(100).collect::<Vec<_>>().join("\n");
                 ui.add_sized(
                     ui.available_size(),
                     egui::TextEdit::multiline(&mut self.text),
@@ -55,3 +57,20 @@ impl eframe::App for Omelt {
         });
     }
 }
+use egui::Modifiers;
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq)]
+struct KeyboardShortcut {
+    key: egui::Key,
+    modifiers: Modifiers,
+}
+
+impl KeyboardShortcut {
+    fn new(key: egui::Key, modifiers: Modifiers) -> Self {
+        Self { key, modifiers }
+    }
+
+    fn matches(&self, input: &egui::InputState) -> bool {
+        input.key_down(self.key) && input.modifiers == self.modifiers
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 416e5a4..6569777 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -3,20 +3,17 @@
 use eframe::egui;
 use std::env;
 use std::fs::File;
+use std::fs::OpenOptions;
+use std::io::Write;
 use std::io::prelude::*;
-use std::io::{Seek, SeekFrom};
 
 mod byte_writer;
 mod gui;
 mod node;
 mod read_and_write;
 
-use byte_writer::{binary_to_string, string_to_binary};
 use gui::Omelt;
-use node::{Node, create_tree, nodes_at_vec, read_tree, tree_to_map, tree_to_string};
-use read_and_write::{body_to_bin, get_map_file, is_valid_file, read_n_bytes};
-
-const MAGIC_NUMBER: u8 = 128;
+use read_and_write::{is_valid_file, save_action, string_translate};
 
 fn main() -> std::io::Result<()> {
     let args: Vec<String> = env::args().collect();
@@ -37,25 +34,11 @@ fn main() -> std::io::Result<()> {
                         } else {
                             after_compression = File::create(f + ".oeuf")?;
                         }
-                        let map = get_map_file(&to_compress)?;
-                        let nodes = nodes_at_vec(map);
-                        let mut tree = create_tree(nodes);
-                        let (str_bin, chars) = tree_to_string(&mut tree);
-                        let binary = string_to_binary(&str_bin);
-                        let len_tree: u32 = str_bin.len() as u32;
-                        let string: String = chars.iter().collect();
-                        after_compression.write_all(&MAGIC_NUMBER.to_be_bytes())?;
-                        after_compression.write_all(&len_tree.to_be_bytes())?;
-                        after_compression.write_all(&(string.len() as u32).to_be_bytes())?;
-                        after_compression.write_all(&binary)?;
-                        after_compression.write_all(string.as_bytes())?;
-                        to_compress.seek(SeekFrom::Start(0))?;
-                        let map = tree_to_map(&mut tree, true);
-                        let trad = body_to_bin(&mut to_compress, map);
-                        let trad_bin = string_to_binary(&trad);
-                        let len_body = trad.len() as u32;
-                        after_compression.write_all(&len_body.to_be_bytes())?;
-                        after_compression.write_all(&trad_bin)?;
+                        let mut txt = "".to_owned();
+                        to_compress.read_to_string(&mut txt)?;
+                        eprintln!("txt = {:?}", txt);
+                        save_action(&txt, &mut after_compression)?;
+                        println!("Done.")
                     }
                     None => {
                         println!("No file name!");
@@ -111,7 +94,12 @@ fn main() -> std::io::Result<()> {
                 let _ = eframe::run_native(
                     "Omelt",
                     options,
-                    Box::new(|_| Ok(Box::new(Omelt::new(&r, File::open(&r)?)))),
+                    Box::new(|_| {
+                        Ok(Box::new(Omelt::new(
+                            &r,
+                            OpenOptions::new().read(true).write(true).open(&r)?,
+                        )))
+                    }),
                 );
             }
         }
@@ -127,7 +115,7 @@ fn main() -> std::io::Result<()> {
                 Box::new(|_| {
                     Ok(Box::new(Omelt::new(
                         "new_file.oeuf",
-                        File::create("new_file.oeuf")?,
+                        File::create_new("new_file.oeuf")?,
                     )))
                 }),
             );
@@ -142,53 +130,3 @@ fn display_options() {
     println!("--uncompress, -u <intput> [<output>]     To uncompress a file.");
     println!("--print     ,-p  <input>                 To print a file compressed.");
 }
-
-fn string_translate(file: &mut File) -> String {
-    let mut buffer = [0u8; 4];
-    let _ = file.read_exact(&mut buffer);
-    let len_tree = u32::from_be_bytes(buffer);
-    let _ = file.read_exact(&mut buffer);
-    let len_chars = u32::from_be_bytes(buffer) * 8;
-
-    let tree_bin = read_n_bytes(file, len_tree);
-    let tree_str = binary_to_string(tree_bin, len_tree);
-
-    let chars_bin = read_n_bytes(file, len_chars);
-    let chars_str = String::from_utf8(chars_bin).unwrap();
-    let root = read_tree(&tree_str, &chars_str.chars().collect());
-    let _ = file.read_exact(&mut buffer);
-    let len_body = u32::from_be_bytes(buffer);
-    translate_bin_char(file, root, len_body)
-}
-
-fn translate_bin_char(file: &mut File, root: Node, len: u32) -> String {
-    let mut txt = Vec::new();
-    let mut translate = String::new();
-    let mut current = &root;
-
-    let _ = file.read_to_end(&mut txt);
-    let txt_str = binary_to_string(txt, len);
-    for b in txt_str.chars() {
-        match b {
-            '1' => {
-                if let Some(r) = &current.r {
-                    current = r;
-                }
-            }
-            '0' => {
-                if let Some(l) = &current.l {
-                    current = l;
-                }
-            }
-            _ => {
-                println!("Error !");
-                return String::new();
-            }
-        }
-        if let Some(v) = current.val {
-            translate.push(v);
-            current = &root;
-        }
-    }
-    translate
-}
diff --git a/src/read_and_write.rs b/src/read_and_write.rs
index 9a740b3..3658d09 100644
--- a/src/read_and_write.rs
+++ b/src/read_and_write.rs
@@ -1,7 +1,15 @@
+use crate::byte_writer;
 use std::collections::HashMap;
 use std::fs::File;
 use std::io::prelude::*;
+use std::io::{Seek, SeekFrom};
 
+use crate::node;
+use byte_writer::*;
+use eframe::Result;
+use node::*;
+
+const MAGIC_NUMBER: u8 = 128;
 pub fn read_n_bytes(file: &mut File, len: u32) -> Vec<u8> {
     let mut n = 0;
     let mut out: Vec<u8> = Vec::new();
@@ -20,17 +28,39 @@ pub fn read_n_bytes(file: &mut File, len: u32) -> Vec<u8> {
     }
     out
 }
+pub fn save_action(txt: &str, file: &mut File) -> Result<(), std::io::Error> {
+    file.seek(SeekFrom::Start(0))?;
+    let map = get_map_string(txt)?;
+    let nodes = nodes_at_vec(map);
+    let mut tree = create_tree(nodes);
+    let (str_bin, chars) = tree_to_string(&mut tree);
+    let binary = string_to_binary(&str_bin);
+    let len_tree: u32 = str_bin.len() as u32;
+    let string: String = chars.iter().collect();
+    file.write_all(&MAGIC_NUMBER.to_be_bytes())?;
+    file.write_all(&len_tree.to_be_bytes())?;
+    file.write_all(&(string.len() as u32).to_be_bytes())?;
+    file.write_all(&binary)?;
+    file.write_all(string.as_bytes())?;
 
-pub fn get_map_file(mut file: &File) -> Result<HashMap<char, i32>, std::io::Error> {
+    let map = tree_to_map(&mut tree, true);
+    let trad = body_to_bin(&txt, map);
+    let trad_bin = string_to_binary(&trad);
+    let len_body = trad.len() as u32;
+    file.write_all(&len_body.to_be_bytes())?;
+    file.write_all(&trad_bin)?;
+    Ok(())
+}
+
+pub fn get_map_string(txt: &str) -> Result<HashMap<char, i32>, std::io::Error> {
     let mut hashmap: HashMap<char, i32> = HashMap::new();
-    let mut contents = String::new();
-    file.read_to_string(&mut contents)?;
-    for c in contents.chars() {
+    for c in txt.chars() {
         let counter = hashmap.entry(c).or_insert(0);
         *counter += 1;
     }
     Ok(hashmap)
 }
+
 pub fn is_valid_file(file: &mut File) -> bool {
     let mut mag_buf = [0u8];
     let _ = file.read_exact(&mut mag_buf);
@@ -39,11 +69,9 @@ pub fn is_valid_file(file: &mut File) -> bool {
         _ => false,
     }
 }
-pub fn body_to_bin(file: &mut File, map: HashMap<String, String>) -> String {
-    let mut txt = String::new();
+pub fn body_to_bin(txt: &str, map: HashMap<String, String>) -> String {
     let mut translate = String::new();
 
-    let _ = file.read_to_string(&mut txt);
     for c in txt.chars() {
         if let Some(code) = map.get(&c.to_string()) {
             translate.push_str(code);
@@ -51,3 +79,51 @@ pub fn body_to_bin(file: &mut File, map: HashMap<String, String>) -> String {
     }
     translate
 }
+pub fn string_translate(file: &mut File) -> String {
+    let mut buffer = [0u8; 4];
+    let _ = file.read_exact(&mut buffer);
+    let len_tree = u32::from_be_bytes(buffer);
+    let _ = file.read_exact(&mut buffer);
+    let len_chars = u32::from_be_bytes(buffer) * 8;
+
+    let tree_bin = read_n_bytes(file, len_tree);
+    let tree_str = binary_to_string(tree_bin, len_tree);
+
+    let chars_bin = read_n_bytes(file, len_chars);
+    let chars_str = String::from_utf8(chars_bin).unwrap();
+    let root = read_tree(&tree_str, &chars_str.chars().collect());
+    let _ = file.read_exact(&mut buffer);
+    let len_body = u32::from_be_bytes(buffer);
+    translate_bin_char(file, root, len_body)
+}
+pub fn translate_bin_char(file: &mut File, root: Node, len: u32) -> String {
+    let mut txt = Vec::new();
+    let mut translate = String::new();
+    let mut current = &root;
+
+    let _ = file.read_to_end(&mut txt);
+    let txt_str = binary_to_string(txt, len);
+    for b in txt_str.chars() {
+        match b {
+            '1' => {
+                if let Some(r) = &current.r {
+                    current = r;
+                }
+            }
+            '0' => {
+                if let Some(l) = &current.l {
+                    current = l;
+                }
+            }
+            _ => {
+                println!("Error !");
+                return String::new();
+            }
+        }
+        if let Some(v) = current.val {
+            translate.push(v);
+            current = &root;
+        }
+    }
+    translate
+}