Used for a compound term not matching one of the above. FFrom and FTo describe the position of the functor. SubPos is a list, each element of which describes the term-position of the corresponding subterm. Read term with options from Stream . Show is the command the user should type to show the saved events.
Help is the command to get an overview of the capabilities.
Special is a list of commands that are not saved in the history. Prompt is the first prompt given. See section 2.4 for available substitutions. The user can define this predicate to set the history depth. It should unify the argument with a positive integer.