Local-global coordinates

Local coordinates are always considered relative to the last point that was used, created or selected. The Utilities -> Id command allows you to make a reference to one point (see Id). Then, to define points using local coordinates referring to the same point, use Options and Fixed Relative when entering each point. The last point selected or created before using this will be the origin of the local coordinate system. It is also possible to enter this central point by its coordinates.
The following are valid examples of defining points using local coordinates:

Example (1):

1,0,0
@2,1,0 (actual coordinates 3,1,0)
@0,3,0 (actual coordinates 3,4,0)
2,2,2
@1,0,3 (actual coordinates 3,2,5)

Example (2):

1,0,0
Fixed Relative (when creating the point)
@2,1,0 (actual coordinates 3,1,0)
@0,3,0 (actual coordinates 1,3,0)
2,2,2
@1,0,3 (actual coordinates 2,0,3)

Example (3):

'local_axes_name'2.3,-4.5,0.0

The last example shows how to enter a point from a local coordinate system called 'local_axes_name' (any name inside the quotation marks will work), previously defined via the option define local axes (see Local axes).

All the examples have been presented using a cartesian notation. However, cylindrical or spherical coordinates can also be used.