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* (3) `[[n,call],[[lang,Lang],Debug,[Function,Arguments],Types,Modes,Functions]]` e.g. `[[n,call],[[lang,same],same,[[n,member2a],[[v,b],["a","b","c"]]], [[[n,member2a],[[t, number], [[t, number], [t, number], [t, number]]]]], [[[n,member2a],[output,input]]], [[[n,member2a],[[v,b],[v,a]],":-", [ [[n,member],[[v,b],[v,a]]]] ]]]]` returns `[v,b]="a"`. (See call(2) above for possible values of Lang and Debug.) * `[[n,trace]]` switches on trace (debug) mode. * `[[n,notrace]]` switches off trace (debug) mode. * `[[n,get_lang_word],[Variable1,Variable2]` e.g. `[[n,get_lang_word],["get_lang_word",[v,word]]]` returns `[v,word]="get_lang_word"`. * `[[n,member3],[Variable1,Variable2]` e.g. `[[n,member3],[[[v,a],"|",[[v,b]]],[[1,1],[1,2],[1,3]]]]` returns `[v,a]=1`, `[v,b]=1`, etc. where Variable1 may be in any pattern. * `[[n,equals4_on]]` switches on equals4 mode (in check arguments, substitute vars and update vars but not in the equals4 command itself), for e.g. list processing in arguments. * `[[n,equals4_off]]` switches off equals4 mode, for debugging. |