ref: 6eed7a47863553bab31c7f9b1b5b314989efc640
dir: /sys/lib/postscript/prologues/Nroundpage.ps/
% % A version of roundpage.ps that assumes a symmetric clipping path. Thanks % to Matthijs Melchior for the suggestion. % /roundpagebbox { pagebbox dup 0 get pagebbox 2 get add 2 exch put pagebbox dup 1 get pagebbox 3 get add 3 exch put pagebbox 0 0 put pagebbox 1 0 put } bind def