Positioning 0-0 leaders

[cjsiam]

I think somewhere in the rules it says that the opponent can’t examine an enemy stack. But I don’t know what section that statement is found.

The only reference I can find is in the Optional rule "Limited Intelligence"...

Now--- in general I think it's appropriate and necessary to be able to examine stacks---VASSAL won't work
to NOT ALLOW it...you can always hover over a stack to see it's contents....

Hidding a Tiger behind some infantry?---naw.....not really a thing....