Most help pages in the Maple help system do not display warning messages. For illustrative purposes, however, warning messages are displayed in a few help pages.

Warnings regarding variables in procedures and modules.

M := module() local a; export b;
    a := proc() c := 2 end proc;
    b := proc() d := 2 end proc;
    e := proc() f := 2 end proc
end module;

Warning, `e` is implicitly declared local to module `M`
Warning, `c` is implicitly declared local to procedure M:-a
Warning, `d` is implicitly declared local to procedure M:-b
Warning, `f` is implicitly declared local to procedure M:-e

Using the Roots command.

Warning, the expression has (possibly infinitely) many roots, some examples of which are given