Where can one find a list of all the operators in J

Question

I am trying to learn J and one huge problem I'm running into is I don't know what all the predefined operators are or where to find them. It took me way too long to figure out the | is both the remainder function(when it dyadic) but when its used monadic it gets absolute value or magnitude. Does any one know where a list of all the operators that J defines by default could be found?

Answer 1

You may be looking for the J Vocabulary, although trying to read its documentation on monadic vs. dyadic | is greek to me. (Disclaimer: I am not a J programmer)

Answer 2

In the J version 6 IDE, control-F1 will bring up documentation on the word at the cursor, if it's defined in the implementation. Hopefully the new version 7 interfaces will eventually manage to retain this feature.