Dont even comment the small ones, comment the big ones (over 20 methods). 5 minutes per class , is 150 words (assuming you are a slow 30 words/per minute , 3 times more if you type fast). Just a class comment, I can live without method comments. 15 lines, enough to provide valuable information to your users.��
Even for very big libraries like Spec it should not take more than 10 key classes to be documented this way , no more than 1 hour total of documentation for a project that can take months of coding to complete. It can't be this hard. ��
Saying that I will start adding class comments wherever I can but obviously the people that have created the code are far more qualified than me .