PRIMER 22.1
Point Creation and Editing
Point Creation and Editing

Points do not have labels
Point type
A point defined by Location is a coordinate in space that is attached to, and moves with, its parent assembly.
A point defined by Node is essentially the same: it obtains it current coordinate from the node. (However if the node is not on a part or node set of the assembly it will not move with the assembly.)
The node should normally be part of the parent assembly, but this is not mandatory.
Restraints and coordinate systems
A point's movement may be restrained in any combination of degrees of freedom (or none).
If a local coordinate system is defined restraints act in that system, otherwise they are global.