XmScaleSetTicks(3) on Linux
The text 5f3f37938755, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie) shipped it.
A Scale function that controls tick marks "XmScaleSetTicks" "Scale functions" "XmScaleSetTicks"