The reference pages for SICStus Prolog built-in predicates conform to certain conventions concerning
These are particularly important in utilizing the Synopsis and
Arguments fields of each reference page. The Synopsis field
consists of the goal template(s) with mode annotations and a brief
description of the purpose of the predicate. For example, consider
this excerpt from the reference page for
These predicates add a dynamic clause, Clause, to the Prolog database. They optionally return a database reference in Ref:
It is undefined whether Clause will precede or follow the clauses already in the database.
The Arguments field lists, for each meta-variable name in the template, its argument type, (e.g. callable), a brief description (sometimes omitted), and an indication (‘:’) if it does module name expansion. For example,
callable A valid dynamic Prolog clause.
db_reference a database reference, which uniquely identifies the newly asserted Clause.