- "render to texture"
- "re-transmit timeout"
- "real-time text"
but in most cases it is used for
- "round-trip time".
It seems like it should either be removed completely and all existing questions should be re-tagged
it should be given a tag description (which it is currently missing) that says that it's for "round-trip time" (since that is what it's mostly used for) and only questions with a different usage should be retagged.
What do you think?