On editing any post on Stack Overflow, it shows me this message:
Your edit will be placed in a queue until it is peer reviewed.
We welcome all constructive edits, but please make them substantial. Avoid trivial, tiny one-letter edits unless absolutely necessary.
How can I decide if the post needs an edit and the edit is not trivial?
I mean, what are the key points should I remember while editing any post to make it substantial?