PS. Naming shall be made intuitive. Ask here first what we mere mortals think of naming these "thingies". I guess most of this already exist but need

*renaming*and an

*"just-works"*and an graphical consistency overhaul. Preferably this shall be done as pop-up windows to make room for more 3D real estate. Think triplus "GLASS".

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Point-datums (short: point)

- point as coordinates with respect to the file coordinate system or a user created ditto.

- point as child of another point in the file coordinate system or a user created ditto.

- point as U-V-coordinates in a plane with respect to an already existing point on that plane.

- point as U-V-W-coordinates above/below (W being the plane normal) the plane with respect to an already existing point on that plane.

- point as coordinates in/on a surface with respect to file coordinate system or a user created ditto.

- point as U-V-coordinates in/on a surface with respect to an already existing point on that surface.

- point as U-V-W-coordinates above/below (W being the surface normal) a surface with respect to an already existing point on that surface.

- point on line of any shape or form with respect to the file coordinate system or a user created ditto or an already existing point on that line, including its endpoints.

- point as an tangency extrapolation(both directions) of a line of any shape or form at an already existing point on that line, including its endpoints.

- point/s between two other points, via a relative value between 0 and 1.

- points repetition on an arbitrary surface in a rectangular or polar pattern.

- point on extrema for a surface with respect to file coordinate system or a user created ditto, NOT with respect to the surface U-V coordinate system.

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Line-datums (short: line)

- line between two already existing points.

- line as coordinates with respect to the file coordinate system or a user created ditto.

- line as coordinates with respect to another point with respect to the file coordinate system or a user created ditto and/or the other point as zero.

- line as U-V-coordinates or file coordinate system or a user created ditto in a plane with respect to an already existing point on that plane.

- line as an angle with respect to another line/curve(tangent) or file coordinate system or a user created ditto in a plane with respect to an already existing point on that plane.

- line following a surface curvature (geometry on support) with respect to file coordinate system or a user created ditto on a surface with respect to an already existing point on that surface.

- line as a direction with respect to file zero coordinates or user defined coordinate system (may be in a plane/ on a surface) with respect to a point on that plane/surface.

- line bisecting two curves.

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Plane-datums (short: plane)

- plane as an offset from file coordinate system or a user created ditto or other planes.

- plane through a point and paralell to already existing plane.

- plane angled to another plane with respect to a rotation axis of choice.

- plane through three points.

- plane through two straight lines.

- plane through a straight line and a point (not on the line).

- plane through planar curve.

- plane normal to arbitrary curve of choice and through a point on that curve.

- plane tangent to arbitrary surface through a point on that surface.

- plane via equation.

- plane/s between two other paralell planes, via a relative value between 0 and 1.