DCL:GRPH1:SGPACK: User Interface:Explanation of Subroutines: Arrow Primitives
Sets the line index for a line segment drawn by SGLAU, SGLAV, and SGLAR.
CALL SGSLAI(INDEX)
INDEX (I) The line index of a line segment. (See Section 1.7. Initial value is 1.)
CALL SGQLAI(INDEX).
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