(PECL ps >= 1.1.0)
ps_set_value — Sets certain values
$psdoc
   , string $name
   , float $value
   )Sets several values which are used by many functions. Parameters are by definition float values.
psdoc
     Resource identifier of the postscript file as returned by ps_new().
name
     
       The name can be one of the following:
       
The way how text is shown.
The x coordinate for text output.
The y coordinate for text output.
The distance between words relative to the width of a space.
The distance between lines in pixels.
value
     The value of the parameter.
   Returns TRUE on success or FALSE on failure.