These files contain HP LaserJet softfonts in landscape orientation. LaserJet softfonts are device specific bitmap representations of a typeface. The bitmap versions are described thoroughly in the LaserJet Technical Reference ManualĀ [ pcl5:techref] for each of the HP LaserJet printers. Newer laser printers can perform automatic rotation of fonts (in 90 degree increments, at least), so the distinction between landscape and portrait font files is disappearing.