试试 /GTHK, Label, THICK命令,通过thick的值调节,帮助中说明如下:
Label
AXIS — Modify thickness of ordinate and abscissa axes on graph displays.
GRID — Modify thickness of grid lines on graph displays.
CURVE — Modify thickness of curve lines (when no area fill [/GROPT]).
THICK
Thickness ratio (whole numbers only, from -1 to 10):
1 — Do not draw the curve, but show only the markers specified by /GMARKER.
0 or 1 — Thin lines.
2 — The default thickness.
3 — 1.5 times the default thickness.
etc. — (up to 10)