diff --git a/python/selective-backup.py b/python/selective-backup.py
index 05c5c3c..f27b559 100644
--- a/python/selective-backup.py
+++ b/python/selective-backup.py
@@ -3,15 +3,20 @@ from zipfile import ZipFile
 import os
 import shutil
 
+# base directory
+basedir = "/media/hd/cloud"
+
+# list of the paths to the files and directories to be copied, relative to the base directory
 filelist = "/media/hd/cloud/Tilman/Computer/selective-backups/filelist.txt"
 
+# duration for backups to be kept
 days_to_keep = 5
 months_to_keep = 5
 
+# directories to backup to
 daily_dir = "/media/hd/cloud/Tilman/Computer/selective-backups/daily/"
 monthly_dir = "/media/hd/cloud/Tilman/Computer/selective-backups/monthly/"
 
-basedir = "/media/hd/cloud"
 now = datetime.now()
 today = datetime.today()
 target_filename = today.strftime('%Y-%m-%d') + "_selective-backup.zip"
@@ -19,8 +24,6 @@ target_filename = today.strftime('%Y-%m-%d') + "_selective-backup.zip"
 with open(filelist) as file:
 	lines = [line.rstrip() for line in file]
 
-#os.chdir(basedir)
-
 # backup directories and files
 with ZipFile(daily_dir + target_filename, 'w') as zip:
 	for line in lines: