The Select Priority dialog box is for specifying the priority relationship
to consult, when limiting the list of jobs appearing on the Jobs listbox in the 
main xpbs window.

Click on either the value radio button, or on the wildcard button
"ANY". If the former is selected, specify the the logical operator, and the
priority value by manipulating a couple of spinboxes. The valid logical 
operators are:

	 "=", "!=", ">", ">=", "<", "<=".
Valid priority values are between -1024 and 1023.

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COMMAND BUTTONS
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This region of command buttons represents the final step when manipulating this
dialog box. 

Click on "ok" when done setting widget values. This is also the default action 
when the <Return> key is pressed.