I'm going to invoke an #askFedi for one of the hardest problems in #computerScience: #namingOfThings

Users should be able to define which parts of the border of a geometry should be filled with particles: a bitmask of back/front/left/right/top/bottom faces (BACK_FACE etc) + shortcuts for common configurations (e.g. SIDE_FACES, ALL_FACES).

A common configuration is a topless container (e.g. a cube or cylinder with particles all along the floor and side walls, but none on top). How to call it?