When you define a predicate in a Prolog mode, by default it is only
visible inside that module, unless you export it by including
the predicate in the export list of the defining module (the export
list of a module is the second argument of the module/2
directive).
Add the predicate predicate at point to the export list of the current
Prolog module (sweeprolog-export-predicate).
Sweep provides a convenient command for exporting predicates that you
define in Sweep Prolog mode buffers. To add the predicate near point
to the export list of the current module, use the command C-c
C-e (sweeprolog-export-predicate). If the current predicate
is documented with a ‘PlDoc’ comment, this command adds a comment
with the predicate’s mode after its name in the export list. If point
is not near a predicate definition, calling
sweeprolog-export-predicate prompts for a predicate to export
with completion for non-exported predicates in the current buffer. To
force sweeprolog-export-predicate to prompt even when point is
on a predicate definition, invoke it with a prefix argument (C-u
C-c C-e).