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DCL:GRPH1:SGPACK: User Interface:Explanation of Subroutines: Polyline Primitives

2.6.4 SGSPLI

1.

Function

Sets the line index for a polyline drawn with SGPLU, SGPLV, SGPLR.

2.

Call

CALL SGSPLI(INDEX)

3.

Explanation of Parameters

INDEX

(I)

The line index of a polyline (See Section 1.7. Initial value is 1.)

4.

Notes

(a)

INDEX must be larger than 1. When INDEX is 0, a message is printed, and no other steps are taken.

(b) The validity of the

INDEX is not checked in this routine. It is checked when SGPLU, SGPLV, or SGPLR is called.

(c)

The current line index can be inquired by

CALL SGQPLI(INDEX).