enabling/disabling direction indicator in hlmv

[tschumann]

Not sure if direction indicator is the right term, but sometimes when viewing a model three lines (red, blue and green) all at right angles at one point.
Is there a way to enable/disable this thing from being displayed?

[tschumann]

So this red/green/blue arrow doesn't show up for all models - I think it might show only if the model has an $origin set.

But I still haven't seen a way to get rid of it.