I am writing a short tutorial for my friends about PSTricks. So I have to systematically explain the available macros such as
\uput (among others) and reduce the possibility of confusion that might happen to my friends.
I am also confused with the naming convention adopted by PSTricks for the macros above. What do
r actually stand for? And what did the author want them to behave specially?
If one macro can be replaced by other macros without much effort, I will suggest the reader to forget it and use the more powerful ones. Remembering many macros (with slightly different feature but replaceable) seem to be difficult for the beginners.