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Comments are used to ask for more information or clarify a question or answer.

Comments may be posted by everyone on one's own questions and answers. Once a user has earned 50 reputation, comments may be dropped on anybody's post.

A user can leave a comment to:

  • ask for additional information or clarification
  • add something to an existing answer or question that wouldn't justify an answer of its own
  • reply to a comment
  • explain an up- or downvote (but especially desirable with downvotes)
  • refer to an aspect which concerns the question but wouldn't be a proper answer.

Comments should always be friendly and constructive.

Don't cast a comment

  • which is comprehensive enough to be an answer – write an answer instead
  • as part of a lengthy discussion – use the chat function instead
  • just to say hello or thank you.