.html#PGOPEN">PGOPEN</a> (or supplied by the user in response to the PGPLOT prompt) is a blank string, this device specification is used, e.g. 

<pre>setenv PGPLOT_DEV /xwin
</pre>
</dd>

<dt>PGPLOT_TYPE</dt>

<dd><i>Device type.</i> If this variable is defined, it is used as the default device type: if the device specification supplied to <a href="subroutines.html#PGOPEN">PGOPEN</a> consists of a file name without a trailing slash (/) and device type, this device type is assumed. e.g. 

<pre>setenv PGPLOT_