diff --git a/source/CT_Config.py b/source/CT_Config.py
index b87376e..de3ce29 100644
--- a/source/CT_Config.py
+++ b/source/CT_Config.py
@@ -41,7 +41,6 @@ class CT_Config:
         """
         add a cup to the config
         :param cup: a Cup object to add as an ordered cup
-        :return: ?
         """
         self.ordered_cups.append(cup)
         for track in cup.tracks:
@@ -52,7 +51,6 @@ class CT_Config:
         """
         add a single track to the config
         :param track: a Track object to add as an unordered tracks
-        :return: ?
         """
         self.unordered_tracks.append(track)
         self.all_version.add(track.since_version)
@@ -63,7 +61,6 @@ class CT_Config:
         create a ctfile configuration in a directory
         :param highlight_version: highlight a specific version in light blue
         :param directory: create CTFILE.txt and RCTFILE.txt in this directory
-        :return: None
         """
         with open(directory + "CTFILE.txt", "w", encoding="utf-8") as ctfile, \
                 open(directory + "RCTFILE.txt", "w", encoding="utf-8") as rctfile:
diff --git a/source/Game.py b/source/Game.py
index a1afe0e..07bfa0d 100644
--- a/source/Game.py
+++ b/source/Game.py
@@ -75,12 +75,12 @@ class Game:
         """
         if format in ["ISO", "WBFS", "CISO"]:
             path_game_format: str = os.path.realpath(self.path + "/../MKWFaraphel." + format.lower())
-            wszst.wit_copy(self.path, path_game_format, format)
+            wszst.wit.copy(self.path, path_game_format, format)
             shutil.rmtree(self.path)
             self.path = path_game_format
 
             self.gui.progress(statut=self.gui.translate("Changing game's ID"), add=1)
-            wszst.edit(self.path, region_ID=self.region_ID, name=f"Mario Kart Wii Faraphel {self.ctconfig.version}")
+            wszst.wit.edit(self.path, region_ID=self.region_ID, name=f"Mario Kart Wii Faraphel {self.ctconfig.version}")
 
     def extract(self) -> None:
         """
@@ -97,7 +97,7 @@ class Game:
                 if not (os.path.exists(path_dir)): break
                 directory_name, i = f"MKWiiFaraphel ({i})", i + 1
 
-            wszst.wit_extract(self.path, path_dir)
+            wszst.wit.extract(self.path, path_dir)
 
             self.path = path_dir
             if os.path.exists(self.path + "/DATA"): self.path += "/DATA"
@@ -166,7 +166,7 @@ class Game:
 
                 if extension == "szs":
                     if not (os.path.realpath(path) in extracted_file):
-                        wszst.szs_extract(path, get_nodir(path))
+                        wszst.szs.extract(path, get_nodir(path))
                         extracted_file.append(os.path.realpath(path))
 
                     szs_extract_path = path + ".d"
@@ -194,12 +194,12 @@ class Game:
 
             for file in extracted_file:
                 self.gui.progress(statut=self.gui.translate("Recompilating", "\n", get_nodir(file)), add=1)
-                wszst.create(file)
+                wszst.szs.create(file)
                 if os.path.exists(file + ".d"):
                     shutil.rmtree(file + ".d")
 
             self.gui.progress(statut=self.gui.translate("Patch main.dol"), add=1)
-            wszst.str_patch(self.path)
+            wszst.wstrt.patch(self.path)
 
             self.gui.progress(statut=self.gui.translate("Patch lecode.bin"), add=1)
 
@@ -209,7 +209,7 @@ class Game:
             shutil.copyfile("./file/lpar-default.txt", self.path + "/tmp/lpar-default.txt")
             shutil.copyfile(f"./file/lecode-{self.region}.bin", self.path + f"/tmp/lecode-{self.region}.bin")
 
-            wszst.lec_patch(
+            wszst.lec.patch(
                 self.path,
                 lecode_file=f"./tmp/lecode-{self.region}.bin",
                 dest_lecode_file=f"./files/rel/lecode-{self.region}.bin",
@@ -235,7 +235,7 @@ class Game:
         """
         if os.path.exists(auto_add_dir): shutil.rmtree(auto_add_dir)
         if not os.path.exists(self.path + "/tmp/"): os.makedirs(self.path + "/tmp/")
-        wszst.autoadd(self.path, get_nodir(self.path) + "/tmp/auto-add/")
+        wszst.szs.autoadd(self.path, get_nodir(self.path) + "/tmp/auto-add/")
         shutil.move(self.path + "/tmp/auto-add/", auto_add_dir)
         shutil.rmtree(self.path + "/tmp/")
 
@@ -265,10 +265,10 @@ class Game:
         bmglang = gamefile[-len("E.txt"):-len(".txt")]  # Langue du fichier
         self.gui.progress(statut=self.gui.translate("Patching text", " ", bmglang), add=1)
 
-        wszst.szs_extract(gamefile, get_nodir(gamefile))
+        wszst.szs.extract(gamefile, get_nodir(gamefile))
 
-        bmgmenu = wszst.bmg_cat(gamefile, ".d/message/Menu.bmg")  # Menu.bmg
-        bmgtracks = wszst.bmg_cat(gamefile, ".d/message/Common.bmg")  # Common.bmg
+        bmgmenu = wszst.bmg.cat(gamefile, ".d/message/Menu.bmg")  # Menu.bmg
+        bmgtracks = wszst.bmg.cat(gamefile, ".d/message/Common.bmg")  # Common.bmg
 
         trackheader = "#--- standard track names"
         trackend = "2328"
@@ -306,9 +306,9 @@ class Game:
         if not os.path.exists("./file/tmp/"): os.makedirs("./file/tmp/")
 
         shutil.copyfile(gamefile + ".d/message/Common.bmg", "./file/tmp/Common.bmg")
-        bmgcommon = wszst.ctc_patch_bmg(ctfile="./file/CTFILE.txt",
+        bmgcommon = wszst.ctc.patch_bmg(ctfile="./file/CTFILE.txt",
             bmgs=["./file/tmp/Common.bmg", "./file/ExtraCommon.txt"])
-        rbmgcommon = wszst.ctc_patch_bmg(ctfile="./file/RCTFILE.txt",
+        rbmgcommon = wszst.ctc.patch_bmg(ctfile="./file/RCTFILE.txt",
             bmgs=["./file/tmp/Common.bmg", "./file/ExtraCommon.txt"])
 
         shutil.rmtree(gamefile + ".d")
@@ -320,7 +320,7 @@ class Game:
                 for text, colored_text in replacement_list.items(): bmgtext = bmgtext.replace(text, colored_text)
             with open(file, "w", encoding="utf-8") as f:
                 f.write(bmgtext)
-            wszst.bmg_encode(file)
+            wszst.bmg.encode(file)
             os.remove(file)
 
         finalise(f"./file/Menu_{bmglang}.txt", bmgmenu, menu_replacement)
@@ -372,7 +372,7 @@ class Game:
         for i, file in enumerate(fc["img"]):
             self.gui.progress(statut=self.gui.translate("Converting images") + f"\n({i + 1}/{len(fc['img'])}) {file}",
                               add=1)
-            wszst.img_encode("./file/" + file, fc["img"][file])
+            wszst.img.encode("./file/" + file, fc["img"][file])
 
     def patch_img_desc(self, img_desc_path: str = "./file/img_desc", dest_dir: str = "./file") -> None:
         """
diff --git a/source/Gui.py b/source/Gui.py
index ba55911..c546981 100644
--- a/source/Gui.py
+++ b/source/Gui.py
@@ -14,7 +14,10 @@ with open("./translation.json", encoding="utf-8") as f:
 
 
 def restart():
-    subprocess.Popen([sys.executable] + sys.argv, creationflags=CREATE_NO_WINDOW, cwd=os.getcwd())
+    """
+    restart the application
+    """
+    subprocess.Popen([sys.executable] + sys.argv, creationflags=subprocess.CREATE_NO_WINDOW, cwd=os.getcwd())
     exit()
 
 
diff --git a/source/Track.py b/source/Track.py
index 02f35df..27ee7e3 100644
--- a/source/Track.py
+++ b/source/Track.py
@@ -61,15 +61,14 @@ class Track:
         check if track wu8's sha1 is correct
         :return: 0 if yes, -1 if no
         """
-        ws = wszst.sha1(self.file_wu8)
-        if wszst.sha1(self.file_wu8) == self.sha1: return 0
+        if wszst.szs.sha1(self.file_wu8) == self.sha1: return 0
         else: return -1
 
     def convert_wu8_to_szs(self) -> None:
         """
         convert track to szs
         """
-        wszst.normalize(src_file=self.file_wu8)
+        wszst.szs.normalize(src_file=self.file_wu8)
 
     def download_wu8(self, github_content_root: str) -> int:
         """
diff --git a/source/definition.py b/source/definition.py
index b50fa1a..592b524 100644
--- a/source/definition.py
+++ b/source/definition.py
@@ -1,6 +1,5 @@
 from threading import Thread
 
-CREATE_NO_WINDOW = 0x08000000
 GITHUB_REPOSITORY = "Faraphel/MKWF-Install"
 GITHUB_MASTER_BRANCH = f"https://raw.githubusercontent.com/{GITHUB_REPOSITORY}/master/"
 GITHUB_DEV_BRANCH = f"https://raw.githubusercontent.com/{GITHUB_REPOSITORY}/dev/"
diff --git a/source/wszst.py b/source/wszst.py
deleted file mode 100644
index 4d9b35a..0000000
--- a/source/wszst.py
+++ /dev/null
@@ -1,174 +0,0 @@
-from .definition import *
-import subprocess
-
-
-def sha1(file, autoadd_path: str = "./file/auto-add/") -> str:
-    """
-    :param autoadd_path: directory where is autoadd directory
-    :param file: track file to check sha1
-    :return: track's sha1
-    """
-    return subprocess.run(["./tools/szs/wszst", "SHA1", file, "--autoadd-path", autoadd_path],
-                          check=True, creationflags=CREATE_NO_WINDOW,
-                          stdout=subprocess.PIPE).stdout.decode().split(" ")[0]
-
-
-def normalize(src_file: str, dest_dir: str = "./file/Track/", dest_name: str = "%N.szs",
-              output_format: str = "szs", autoadd_path: str = "./file/auto-add/") -> None:
-    """
-    convert a track into an another format
-    :param src_file: source file
-    :param dest_dir: destination directory
-    :param dest_name: destination filename (%N mean same name as src_file)
-    :param output_format: format of the destination track
-    :param autoadd_path: path of the auto-add directory
-    """
-    subprocess.run(["./tools/szs/wszst", "NORMALIZE", src_file, "--DEST",
-        dest_dir+dest_name, "--"+output_format, "--overwrite", "--autoadd-path",
-        autoadd_path], creationflags=CREATE_NO_WINDOW, stderr=subprocess.PIPE)
-
-
-def wit_extract(file: str, dest_dir: str) -> None:
-    """
-    extract the game into a directory
-    :param file: game's file to extract (can be WBFS, ISO, CISO)
-    :param dest_dir: where to extract the game
-    """
-    subprocess.run(["./tools/wit/wit", "EXTRACT", get_nodir(file), "--DEST", dest_dir],
-                    creationflags=CREATE_NO_WINDOW, cwd=get_dir(file))
-
-
-def create(file: str) -> None:
-    """
-    convert a directory into a szs file
-    :param file: create a .szs file from the directory {file}.d
-    """
-    subprocess.run(["./tools/szs/wszst", "CREATE", get_nodir(file) + ".d", "-d", get_nodir(file),
-                    "--overwrite"], creationflags=CREATE_NO_WINDOW, cwd=get_dir(file),
-                   check=True, stdout=subprocess.PIPE)
-
-
-def str_patch(path: str) -> None:
-    """
-    Patch the main.dol file
-    :param path: path to the game
-    """
-    subprocess.run(["./tools/szs/wstrt", "patch", get_nodir(path) + "/sys/main.dol", "--clean-dol",
-                    "--add-lecode"], creationflags=CREATE_NO_WINDOW, cwd=get_dir(path),
-                   check=True, stdout=subprocess.PIPE)
-
-
-def lec_patch(path: str,
-              lecode_file: str = f"./tmp/lecode-PAL.bin",
-              dest_lecode_file: str = f"./files/rel/lecode-PAL.bin",
-              game_track_path: str = "./files/Race/Course/",
-              move_track_path: str = "./files/Race/Course/",
-              ctfile_path: str = "./tmp/CTFILE.txt",
-              lpar_path: str = "./tmp/lpar-default.txt") -> None:
-    """
-    Patch the file with a lecode file (this is the adding track part)
-    :param path: path to the game file
-    :param lecode_file: path to the lecode file
-    :param dest_lecode_file: destination of the lecode file
-    :param game_track_path: subpath to the track directory
-    :param move_track_path: where are stored the track to move
-    :param ctfile_path: where is the ctfile (track and cup definition)
-    :param lpar_path: where is the lpar_path (game modification like speed, speedometer, ...)
-    """
-    subprocess.run(
-        ["./tools/szs/wlect", "patch", lecode_file, "-od",
-         dest_lecode_file, "--track-dir", game_track_path,
-         "--move-tracks", move_track_path, "--le-define", ctfile_path, "--lpar",
-         lpar_path, "--overwrite"], creationflags=CREATE_NO_WINDOW, cwd=path, check=True, stdout=subprocess.PIPE)
-
-
-def edit(file: str, region_ID: str = "P", name: str = "Mario Kart Wii") -> None:
-    """
-    Edit game property like region or name
-    :param file: game's file
-    :param region_ID: new region_ID
-    :param name: new name
-    """
-    subprocess.run(["./tools/wit/wit", "EDIT", get_nodir(file), "--id",
-                    f"RMC{region_ID}60", "--name", name, "--modify", "ALL"],
-                   creationflags=CREATE_NO_WINDOW, cwd=get_dir(file),
-                   check=True, stdout=subprocess.PIPE)
-
-
-def autoadd(file: str, dest_dir: str) -> None:
-    """
-    Create an auto_add directory from a game file
-    :param file: the game's path
-    :param dest_dir: directory where to store autoadd file
-    """
-    subprocess.run(["./tools/szs/wszst", "AUTOADD", get_nodir(file) + "/files/Race/Course/", "--DEST", dest_dir],
-                   creationflags=CREATE_NO_WINDOW, cwd=get_dir(file),
-                   check=True, stdout=subprocess.PIPE)
-
-
-def bmg_encode(file: str) -> None:
-    """
-    Encode a txt file into a bmg file
-    :param file: txt file to convert
-    """
-    subprocess.run(["./tools/szs/wbmgt", "ENCODE", get_nodir(file), "--overwrite"],
-                   creationflags=CREATE_NO_WINDOW, cwd=get_dir(file))
-
-
-def bmg_cat(path: str, subfile: str = ".d/message/Common.bmg") -> str:
-    """
-    read a bmg file
-    :param path: path to a szs file
-    :param subfile: path to a subdirectory
-    :return: bmg definition
-    """
-    return subprocess.run(["./tools/szs/wbmgt", "CAT", get_nodir(path) + subfile],
-                          creationflags=CREATE_NO_WINDOW, cwd=get_dir(path),
-                          check=True, stdout=subprocess.PIPE).stdout.decode()
-
-
-def wit_copy(src_path, dst_path, format: str = "ISO") -> None:
-    """
-    Copy the game into an another format
-    :param src_path: original game path
-    :param dst_path: new game path
-    :param format: format for the new game
-    """
-    subprocess.run(["./tools/wit/wit", "COPY", get_nodir(src_path), "--DEST",
-                    get_nodir(dst_path), f"--{format.lower()}", "--overwrite"],
-                   creationflags=CREATE_NO_WINDOW, cwd=get_dir(dst_path),
-                   check=True, stdout=subprocess.PIPE)
-
-
-def ctc_patch_bmg(bmgs: list, ctfile: str = "./file/CTFILE.txt"):
-    """
-    Patch a bmg file with a ctfile with OVERWRITE option
-    :param bmgs: all bmg files
-    :param ctfile: the ctfile path
-    :return: combined bmg
-    """
-    bmg_cmd = []
-    for bmg in bmgs: bmg_cmd.extend(["--patch-bmg", f"OVERWRITE={bmg}"])
-    return subprocess.run(
-            ["tools/szs/wctct", "bmg", "--le-code", "--long", ctfile, *bmg_cmd],
-            creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE).stdout.decode()
-
-
-def img_encode(src_file: str, format: str) -> None:
-    """
-    Encode an .png image into a new format
-    :param src_file: .png image
-    :param format: new image format
-    """
-    subprocess.run(["./tools/szs/wimgt", "ENCODE", src_file, "-x", format, "--overwrite"],
-                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
-
-
-def szs_extract(file: str, dest_dir: str) -> None:
-    """
-    Extract an szs in a directory
-    :param file: .szs file
-    :param dest_dir: directory where to extract the file
-    """
-    subprocess.run(["./tools/szs/wszst", "EXTRACT", get_nodir(file), "--DEST", dest_dir+".d"],
-                   creationflags=CREATE_NO_WINDOW, cwd=get_dir(file))
\ No newline at end of file
diff --git a/source/wszst/__init__.py b/source/wszst/__init__.py
new file mode 100644
index 0000000..974f247
--- /dev/null
+++ b/source/wszst/__init__.py
@@ -0,0 +1,5 @@
+from ..definition import *
+from subprocess import CREATE_NO_WINDOW
+import subprocess
+
+__all__ = ["bmg", "ctc", "img", "lec", "wstrt", "szs", "wit", "subprocess", "CREATE_NO_WINDOW"]
diff --git a/source/wszst/bmg.py b/source/wszst/bmg.py
new file mode 100644
index 0000000..4f291ef
--- /dev/null
+++ b/source/wszst/bmg.py
@@ -0,0 +1,22 @@
+from . import *
+
+
+def encode(file: str) -> None:
+    """
+    Encode a txt file into a bmg file
+    :param file: txt file to convert
+    """
+    subprocess.run(["./tools/szs/wbmgt", "ENCODE", file, "--overwrite"],
+                   creationflags=CREATE_NO_WINDOW)
+
+
+def cat(path: str, subfile: str = ".d/message/Common.bmg") -> str:
+    """
+    read a bmg file
+    :param path: path to a szs file
+    :param subfile: path to a subdirectory
+    :return: bmg definition
+    """
+    return subprocess.run(["./tools/szs/wbmgt", "CAT", path + subfile],
+                          creationflags=CREATE_NO_WINDOW,
+                          check=True, stdout=subprocess.PIPE).stdout.decode()
\ No newline at end of file
diff --git a/source/wszst/ctc.py b/source/wszst/ctc.py
new file mode 100644
index 0000000..401c5ff
--- /dev/null
+++ b/source/wszst/ctc.py
@@ -0,0 +1,15 @@
+from . import *
+
+
+def ctc_patch_bmg(bmgs: list, ctfile: str = "./file/CTFILE.txt"):
+    """
+    Patch a bmg file with a ctfile with OVERWRITE option
+    :param bmgs: all bmg files
+    :param ctfile: the ctfile path
+    :return: combined bmg
+    """
+    bmg_cmd = []
+    for bmg in bmgs: bmg_cmd.extend(["--patch-bmg", f"OVERWRITE={bmg}"])
+    return subprocess.run(
+        ["tools/szs/wctct", "bmg", "--le-code", "--long", ctfile, *bmg_cmd],
+        creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE).stdout.decode()
\ No newline at end of file
diff --git a/source/wszst/img.py b/source/wszst/img.py
new file mode 100644
index 0000000..a81551f
--- /dev/null
+++ b/source/wszst/img.py
@@ -0,0 +1,11 @@
+from . import *
+
+
+def encode(src_file: str, format: str) -> None:
+    """
+    Encode an .png image into a new format
+    :param src_file: .png image
+    :param format: new image format
+    """
+    subprocess.run(["./tools/szs/wimgt", "ENCODE", src_file, "-x", format, "--overwrite"],
+                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
diff --git a/source/wszst/lec.py b/source/wszst/lec.py
new file mode 100644
index 0000000..1b094a6
--- /dev/null
+++ b/source/wszst/lec.py
@@ -0,0 +1,24 @@
+from . import *
+
+
+def patch(path: str,
+          lecode_file: str = f"./tmp/lecode-PAL.bin",
+          dest_lecode_file: str = f"./files/rel/lecode-PAL.bin",
+          game_track_path: str = "./files/Race/Course/",
+          move_track_path: str = "./files/Race/Course/",
+          ctfile_path: str = "./tmp/CTFILE.txt",
+          lpar_path: str = "./tmp/lpar-default.txt") -> None:
+    """
+    Patch the file with a lecode file (this is the adding track part)
+    :param path: path to the game file
+    :param lecode_file: path to the lecode file
+    :param dest_lecode_file: destination of the lecode file
+    :param game_track_path: subpath to the track directory
+    :param move_track_path: where are stored the track to move
+    :param ctfile_path: where is the ctfile (track and cup definition)
+    :param lpar_path: where is the lpar_path (game modification like speed, speedometer, ...)
+    """
+    subprocess.run(
+        ["./tools/szs/wlect", "patch", lecode_file, "-od", dest_lecode_file, "--track-dir", game_track_path,
+         "--move-tracks", move_track_path, "--le-define", ctfile_path, "--lpar", lpar_path, "--overwrite"],
+        creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
\ No newline at end of file
diff --git a/source/wszst/szs.py b/source/wszst/szs.py
new file mode 100644
index 0000000..e209aa2
--- /dev/null
+++ b/source/wszst/szs.py
@@ -0,0 +1,56 @@
+from . import *
+
+
+def szs_extract(file: str, dest_dir: str) -> None:
+    """
+    Extract an szs in a directory
+    :param file: .szs file
+    :param dest_dir: directory where to extract the file
+    """
+    subprocess.run(["./tools/szs/wszst", "EXTRACT", file, "--DEST", dest_dir + ".d"],
+                   creationflags=CREATE_NO_WINDOW)
+
+
+def sha1(file, autoadd_path: str = "./file/auto-add/") -> str:
+    """
+    :param autoadd_path: directory where is autoadd directory
+    :param file: track file to check sha1
+    :return: track's sha1
+    """
+    return subprocess.run(["./tools/szs/wszst", "SHA1", file, "--autoadd-path", autoadd_path],
+                          check=True, creationflags=CREATE_NO_WINDOW,
+                          stdout=subprocess.PIPE).stdout.decode().split(" ")[0]
+
+
+def normalize(src_file: str, dest_dir: str = "./file/Track/", dest_name: str = "%N.szs",
+              output_format: str = "szs", autoadd_path: str = "./file/auto-add/") -> None:
+    """
+    convert a track into an another format
+    :param src_file: source file
+    :param dest_dir: destination directory
+    :param dest_name: destination filename (%N mean same name as src_file)
+    :param output_format: format of the destination track
+    :param autoadd_path: path of the auto-add directory
+    """
+    subprocess.run(["./tools/szs/wszst", "NORMALIZE", src_file, "--DEST", dest_dir + dest_name, "--" + output_format,
+                    "--overwrite", "--autoadd-path", autoadd_path],
+                   creationflags=CREATE_NO_WINDOW, stderr=subprocess.PIPE)
+
+
+def create(file: str) -> None:
+    """
+    convert a directory into a szs file
+    :param file: create a .szs file from the directory {file}.d
+    """
+    subprocess.run(["./tools/szs/wszst", "CREATE", file + ".d", "-d", file, "--overwrite"],
+                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
+
+
+def autoadd(file: str, dest_dir: str) -> None:
+    """
+    Create an auto_add directory from a game file
+    :param file: the game's path
+    :param dest_dir: directory where to store autoadd file
+    """
+    subprocess.run(["./tools/szs/wszst", "AUTOADD", file + "/files/Race/Course/", "--DEST", dest_dir],
+                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
\ No newline at end of file
diff --git a/source/wszst/wit.py b/source/wszst/wit.py
new file mode 100644
index 0000000..da9a2f0
--- /dev/null
+++ b/source/wszst/wit.py
@@ -0,0 +1,34 @@
+from . import *
+
+
+def extract(file: str, dest_dir: str) -> None:
+    """
+    extract the game into a directory
+    :param file: game's file to extract (can be WBFS, ISO, CISO)
+    :param dest_dir: where to extract the game
+    """
+    subprocess.run(["./tools/wit/wit", "EXTRACT", file, "--DEST", dest_dir],
+                   creationflags=CREATE_NO_WINDOW)
+
+
+def edit(file: str, region_ID: str = "P", name: str = "Mario Kart Wii") -> None:
+    """
+    Edit game property like region or name
+    :param file: game's file
+    :param region_ID: new region_ID
+    :param name: new name
+    """
+    subprocess.run(
+        ["./tools/wit/wit", "EDIT", file, "--id", f"RMC{region_ID}60", "--name", name, "--modify", "ALL"],
+        creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
+
+
+def copy(src_path, dst_path, format: str = "ISO") -> None:
+    """
+    Copy the game into an another format
+    :param src_path: original game path
+    :param dst_path: new game path
+    :param format: format for the new game
+    """
+    subprocess.run(["./tools/wit/wit", "COPY", src_path, "--DEST", dst_path, f"--{format.lower()}", "--overwrite"],
+                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
diff --git a/source/wszst/wstrt.py b/source/wszst/wstrt.py
new file mode 100644
index 0000000..a2ef645
--- /dev/null
+++ b/source/wszst/wstrt.py
@@ -0,0 +1,10 @@
+from . import *
+
+
+def patch(path: str) -> None:
+    """
+    Patch the main.dol file
+    :param path: path to the game
+    """
+    subprocess.run(["./tools/szs/wstrt", "patch", path + "/sys/main.dol", "--clean-dol", "--add-lecode"],
+                   creationflags=CREATE_NO_WINDOW, check=True, stdout=subprocess.PIPE)
\ No newline at end of file