Translations:Datum/10/en

From FreeCAD Documentation

Since they appeared in v0.17, datum objects were intended to be used inside PartDesign Bodies. However, since they are useful "reference" objects with different attachment methods, it has been proposed that they should be available outside of the PartDesign Workbench. In this way, they will be usable in all workbenches as supporting geometry, particularly in the context of creating assemblies.