tingr:get-gradingentity

(tingr:get-gradingentity grading)

Returns the grading contour entity used by the grading TinGrading entity.

Arguments	grading (ename or vla-object) the TinGrading entity
Return	ename or NIL
Example
Remarks	see tingr:setsloperule and tingr:setsurfacerule functions; see (tingr:set-gradingentity)