diff --git a/main.py b/main.py
index 798f765..1ab3e08 100644
--- a/main.py
+++ b/main.py
@@ -6,16 +6,18 @@ import os
 from pathlib import Path
 import shutil
 
+# parse arguments
 parser = argparse.ArgumentParser(description="parse netlist and pack all references to current working directory")
 parser.add_argument("files", nargs="*", type=argparse.FileType("r"), default=sys.stdin)
 parser.add_argument("-d", action="store_const", const=True, default=False, help="Dryrun")
 
 args = parser.parse_args()
 
-print(args.d)
 fileregex = re.compile(r"(?<!\w)file=\"(.*?)\"")
 files = {}
 
+
+# process all netlists
 for file in args.files:
     location = Path(file.name)
     print(f"parsing {file.name}")
@@ -25,12 +27,16 @@ for file in args.files:
     with open(location.name, "w+") as outfile:
         last = 0
 
+        # iterate over all matches
         for match in fileregex.finditer(content):
             start = match.start(1)
             end = match.end(1)
+            
             path = Path(match.group(1))
             destpath = path
 
+            # build the destination in the current folder
+            # for the retrieved file reference
             if path.is_absolute():
                 try:
                     destpath = path.relative_to(location.parent)
@@ -42,35 +48,37 @@ for file in args.files:
                 if destpath.parts[0] == "..":
                     destpath = Path(*destpath.parts[1:])
             
+            # write the new path the new netlist file
             outfile.write(content[last:start])
             outfile.write(str(destpath))
 
+            # remember file to be copied for later
             files[path] = destpath
             last = end
 
         outfile.write(content[last:])
 
-# do dryrun
+# do dryrun if it is wanted
 if args.d:
     for file in files:
         print(f"copy {file} -> {files[file]}")
 
     exit(0)
 
+
+# copy all files found in netlist earlier
 for file in files:
     src = Path(file)
     dst = Path(files[file])
 
     if not src.exists():
-        # create dir
         print(f"src does not exist: {str(src)}")
         continue
 
+    # create directory
     dst.parent.mkdir(parents=True, exist_ok=True)
-    
-    print(file, files[file])
-
     shutil.copyfile(src, dst)
+