"the effective visibility"

[Chipp Walters]

Trying to figure out how to find "the effective visibility" property
of a control.

Here's why:

Say you have 2 buttons: "red" and "blue" in a group.

If you put in msg:

put the vis of btn "red"

it will return "true"

If you HIDE the group with the 2 buttons then

put the vis of btn "red"

it still returns "true" even though the button is not visible. It is
of course visible w/regard to the group, just not on the card. How can
i figure out whether the button is ACTUALLY visible? Don't assume the
button is even in a group.