This forum is collaborative. Other students or instructors may suggest edits to: Correct mistakes or typos Improve clarity or formatting Add helpful context or references Edits are meant to enhance learning and understanding, not to change the meaning of your question or answer. You will always retain visibility of your original contribution..

Therefore questions and answers can be edited like wiki pages by experienced users of this site in order to improve the overall quality of the knowledge base content. Such privileges are granted based on user karma level: you will be able to do the same once your karma gets high enough.

5	upvote, add comments
30	insert text link, upload files
50	downvote
50	delete own comment
100	flag offensive, close own questions
300	edit any post, view offensive flags
500	accept any answer
500	delete any comment
500	close any posts
750	your biography can be seen as tooltip
1,000	delete any question or answer