The user can define a loading space by its internal length, width and height, and the planner keeps all cargo inside it.
Counts when: Documentation shows a loading space with user-entered or preset internal length, width and height that the planner packs within.
“These values represent the inside (loadable) dimensions of the vehicle.”
https://cubemaster.net/Help/webhelp/pages/basic1.html
“length | integer | Length in UOM units.”
https://cubemaster.net/Subscription/Guides/API/api_guide.html
All editions (Online, API V2, Windows, SDK). Container types Carton, Pallet, SeaVan, Truck, AirPallet; preset databases plus user-entered sizes.