prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).

 prolog:hook(Goal)[multifile, library(prolog_xref)]

True if Goal is a hook that is called spontaneously (e.g., from foreign code).