What are these messages about .DS_Store files?

If you're using MacOS X, CVS may give you messages about ".DS_Store" files. These are used to keep track of window layouts, etc. To suppress these messages, just create a file in your home directory called ".cvsignore" and add a line of ".DS_Store" to it (no quotes). CVS will then ignore all .DS_Store files in all of your checked-out directory trees.