Detailed information is found in the reference pages for the following:
initialization :G declaration,ISOdeclares G to be run when program is started
load_files(:F)load_files(:F,+O)load files according to options O
user:runtime_entry(+S) hookentry point for a runtime system
save_files(+L,+F)saves the modules, predicates, clauses and directives in the given files L into file F
save_modules(+L,+F)save the modules specifed in L into file F
save_predicates(:L,+F)save the predicates specified in L into file F
save_program(+F)save_program(+F,:G)save all Prolog data into file F with startup goal G
volatile :P declarationdeclares predicates specified by P to not be included in saves.