As y’all know, dragging left will make a crossing-box, while dragging right will do a window box.
But, sometimes (often) you can’t drag to the left, and then it would be helpful if one could flip the functionality by holding SHIFT and drag right ( = crossing-box).
OK, the hidden secret is - hold the ALT key while dragging (prevents from dragging any objects and thus one can start a crossing-box right on top of any object without dislocating it) but it would feel more intuitive to be able to drag in the direction you want to … well, drag.
To or From
Being able to cross drag-select in the other direction is also about precision, which often is best achieved when dragging towards the extent of your desired selection rather than starting at it and dragging away from it (tends to miss at the first click if the target is small)
Keeping the ALT option as is, is of course OK as well.
This must be a Mac Rhino-specific “bug”… works correctly in Win Rhino.
Catalyst is a Stratasys 3D printer driver/software, the command is supposed to load the Rhino model into the printer software, but the function has never really worked correctly even if you did have the Catalyst software installed - and of course makes no sense at all if you don’t. It has been removed from the V6 WIP, thankfully.
On top of that, Catalyst is Windows-only software, so it makes doubly no sense on Mac. I might check your alias list and see if you have the entries
c = '_SelCrossing
w = '_SelWindow
If you do, then this is a Mac-side bug that Catalyst command is overriding the alias, which is not supposed to happen, aliases are supposed to have priority.