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(PHP 3>= 3.0.8, PHP 4 >= 4.0b4)
void cpdf_setgray (int pdf document, double gray value)
void cpdf_setgray
The cpdf_setgray_stroke() function sets the current drawing and filling color to the given gray value.
See also cpdf_setrgbcolor_stroke(), cpdf_setrgbcolor_fill().
