-check want_at, undef, 'main : want_at';
-check want_at(0), undef, 'main : want_at(0)';
-check want_at(1), undef, 'main : want_at(1)';
-check want_at(-1), undef, 'main : want_at(-1)';
+check want_at, undef, 'main : want_at';
+check want_at(HERE), undef, 'main : want_at HERE';
+check want_at(UP), undef, 'main : want_at UP';
+check want_at(-1), undef, 'main : want_at -1';