ps-warn-paper-type
ps-warn-paper-type is a variable defined in `ps-print.el
'.
Its value is tDocumentation: Non-nil means give an error if paper size is not equal to `ps-paper-type'. It's used when `ps-spool-config' is set to `setpagedevice'. You can customize this variable. This variable was introduced, or its default value was changed, in version 20 of Emacs.