CVS

Recently I've visited Mustardseedmedia.com and found a podcast about CVS access there.
I've recollected all the vain attempts while uploading something to Drupal.org for the first time or if you are just not familiar with CVS.
There are plenty of utils for work with CVS available but what is really handy is SmartCvs.
So, all you need is to spend 10 minutes on this video.