put from Ghostscript you
must do this explicitly as shown in the example above.

<p>
When executing a string with <b><tt>gsdll_execute_cont()</tt></b>,
<b><tt>currentfile</tt></b> is the input from
<b><tt>gsdll_execute_cont()</tt></b>.  Reading from <b><tt>%stdin</tt></b>
uses the callback.

<p>
Please note that there is a 64 KB length limit on the passed string.
If you have more than 65535 bytes of input to process at a given time,
it must be split into separate smaller buffers, each passed on a
separate c