There are two levels of commands in XPI, GTBUF and GTCOM commands. GTBUF internal commands are always enclosed by % symbols such as %ED%. All these commands can be spelled out in full, or abbreviated.
The following gives a list of current GTBUF commands:
And the following are the GTCOM commands:
The last three of these are really only for debugging
Along similar lines, but actually a part of Xselect, is that for all the commands of the verb verb_what form, if you just type the verb and hit a return, you will be given a list of possible sub commands, and prompted for the verb_what parameter again, i.e.
xsel > extract<ret>
> Give parameter to be binned >[all]