Script or command differences between Rhino 7 and Rhino 8?

Rhino Rhino for Windows
,
1

Is there any reason that the following commands, in a toolbar button, would work in Rhino 7 for Windows but not in Rhino 8? (this turns whatever is selected white in 7, then deselects it, it doesn’t do anything at all in 8)

noecho
! _Select _Pause _Pause
-Properties O C O
254,254,254
Enter Enter
_SelNone

2

Probably the way the Select command works has changed. Looks like in V8, even with a Pause, it does not accept preselected objects.

3

Turns out it works with preselection if I nuke the first two lines.