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3.12.4 Mode Line

If working with an application split into several modules, then it is often useful to let files begin with a “mode line”:

%%% -*- Mode: Prolog; Module: ModuleName; -*-

The Emacs interface will look for the mode line and notify the SICStus Prolog module system that code fragments being incrementally reconsulted or recompiled should be imported into the module ModuleName. If the mode line is missing, then the code fragment will be imported into the type-in module. An additional benefit of the mode line is that it tells Emacs that the file contains Prolog code, regardless of the setting of the Emacs variable auto-mode-alist. A mode line can be inserted by choosing Insert/Module modeline in the Prolog menu.

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