DCL:GRPH2:UEPACK: Tone Fill Routines: Explanation of Subroutines
Sets the value of the tone level used by UETONE with an array giving the grid-point values and the step size or the approximate number of levels.
CALL UEGTLB(Z,MX,NX,NY,DX)
Z, MX, NX, NY See UETONE (Section 9.2.1) DX See UEGTLA (Section 9.2.3)