This part documents some Ciao libraries which provide additional predicates and functionalities that, despite not being in the ISO standard, are present in many popular Prolog systems. This includes definite clause grammars (DCGs), "Quintus-style" internal database, list processing predicates, dictionaries, string processing, DEC-10 Prolog-style input/output, formatted output, dynamic loading of modules, activation of operators at run-time, etc.
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