diff --git a/src/caosadvancedtools/loadFiles.py b/src/caosadvancedtools/loadFiles.py
index ffeda159c3de97e70098582284254093492325c7..982cb9f3de193a2bc31096a6832122b390c98832 100755
--- a/src/caosadvancedtools/loadFiles.py
+++ b/src/caosadvancedtools/loadFiles.py
@@ -51,6 +51,9 @@ def convert_size(size):
 
 
 def combine_ignore_files(caosdbignore, localignore, dirname=None):
+    """appends the contents of localignore to caosdbignore
+    and saves the result and returns the name
+    """
     tmp = NamedTemporaryFile(delete=False, mode="w", dir=dirname, prefix=".caosdbignore")
     with open(caosdbignore, "r") as base:
         tmp.write(base.read())
@@ -61,21 +64,29 @@ def combine_ignore_files(caosdbignore, localignore, dirname=None):
 
 
 def compile_file_list(caosdbignore, localpath):
+    """creates a list of files
+    that contain all files under localpath except those excluded by caosdbignore
+    """
     from gitignore_parser import parse_gitignore
     matches = parse_gitignore(caosdbignore)
     current_ignore = caosdbignore
     non_ignored_files = []
     ignore_files = []
     for root, dirs, files in os.walk(localpath):
+        # remove local ignore files that do no longer apply to the current subtree (branch switch)
         while len(ignore_files) > 0 and not root.startswith(ignore_files[-1][0]):
             shutil.os.remove(ignore_files[-1][1])
             ignore_files.pop()
+
+        # use the global one if there are no more local ones
         if len(ignore_files) > 0:
             current_ignore = ignore_files[-1][1]
             matches = parse_gitignore(current_ignore)
         else:
             current_ignore = caosdbignore
             matches = parse_gitignore(current_ignore)
+
+        # create a new local ignore file
         if ".caosdbignore" in files:
             current_ignore = combine_ignore_files(current_ignore,
                                                   os.path.join(root, ".caosdbignore"),
@@ -84,6 +95,8 @@ def compile_file_list(caosdbignore, localpath):
                                                   dirname=root)
             ignore_files.append((root, current_ignore))
             matches = parse_gitignore(current_ignore)
+
+        # actually append files that are not ignored
         for fi in files:
             fullpath = os.path.join(root, fi)
             if not matches(fullpath):
@@ -92,6 +105,10 @@ def compile_file_list(caosdbignore, localpath):
 
 
 def create_re_for_file_list(files, localroot, remoteroot):
+    """creates a regular expression
+    that matches file paths contained in the files argument and all parent directories.
+    The prefix localroot is replaced by the prefix remoteroot.
+    """
     regexp = ""
     for fi in files:
         path = fi
@@ -108,10 +125,8 @@ def loadpath(path, include, exclude, prefix, dryrun, forceAllowSymlinks, caosdbi
              localpath=None):
 
     if caosdbignore:
+        # create list of files and create regular expression for small chunks
         filelist = compile_file_list(caosdbignore, localpath)
-        for fi in filelist:
-            print(fi)
-
         fulllist = filelist
 
         index = 0
@@ -124,8 +139,8 @@ def loadpath(path, include, exclude, prefix, dryrun, forceAllowSymlinks, caosdbi
     else:
         includes = [include]
 
+    # if no caosdbignore file is used, this iterates over a single include
     for include in includes:
-        print(include)
         if dryrun:
             logger.info("Performin a dryrun!")
             files = db.Container().retrieve(