[magick-users] PDF Max page size

[duc.sequere.aut.de.via.decede at imagemagick.org]

> but PDF page length limit seems to be 5080 mm (5m)

Prior to PDF 1.6 the maximum allowed page size is 200 by 200 inches.  PDF 1.6
supports up to 15 million inches.  Of course you need software that can grok
PDF 1.6.