chore: Demo & examples

examples/meta/ceremony.pl

@@ -4,7 +4,7 @@ printer :-
     shift(Name),
     write(Name), write(", ").
 
-main :-
+ceremony_main :-
     writeln("/Ceremony starts/"),
     reset(printer, Name, Cont),
     \+ \+ ( Name = "John", call(Cont) ),
@@ -12,4 +12,4 @@ main :-
     writeln("and my parents!"),
     writeln("/Ceremony ends/").
 
-:- initialization(main).
+:- initialization(ceremony_main).