ps_setgray
  Sets gray value
  
 
  Description
  
   bool ps_setgray
    ( resource $psdoc
   , float $gray
   )
  
  
 
 
  Parameters
  
   
    
     - 
psdoc
- 
      
       Resource identifier of the postscript file
       as returned by ps_new.
       
- 
gray
- 
      
       The value must be between 0 (white) and 1 (black).
       
 
 
  Return Values
  
   Returns TRUE on success or FALSE on failure.