Comment by crote

On the other hand, not writing documentation also has a cost.

Code is rarely written from start to finish in a single session. Would you rather spend 5 minutes before you do a git commit to write down some very basic documentation, or spend an hour rediscovering it when you pick up development two weeks later?

Nobody is expecting extensive and well-polished documentation here, but is a "Flags X, Y, and Z are mandatory, buffer A is required: I tested with 10MB, smaller might be fine too" really too much to ask for?

Is the time you saved by not writing that one line worth someone else spending several hours figuring out how to do a "hello world"?