(PHP3 >= 3.0.8, PHP4 >= 4.0b4)
cpdf_setgray_stroke -- Sets drawing color to gray value
Description
void cpdf_setgray_stroke (int pdf document, double gray value)
     The cpdf_setgray_stroke() function sets the current
     drawing color to the given gray value.
    
     See also cpdf_setrgbcolor_stroke().