Any further language needed for in-turn undercalls or "gross misunderstandings"?

[MikeB]

See one discussion thread on this topic here: http://www.pokertda.com/forum/index.php?topic=808.0

For example, chips in turn must stay in the pot. Can we adopt any further language as to when the player might be allowed to leave the chips in and fold, and when he should be forced to make the call?

What if the player didn't say call but merely pushed out an under-call, is that different than saying call and then pushing out the under-call chips?

Etc. etc.