Saving/opening the config file should not strip out comments; it should be possible for a person to come along with a text editor, and be presented with a file that they can edit; this requires it be possible to put comments in the file.
For example, I had set up my config file for three projects, and it quickly got old, setting up a new one, so I created a template in a comment at the top of the file, with some tokens for the next person to replace with things like project name and so on. I opened the config with ccnetconfig, played around, saved it, and my template and other comments were stripped out.
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