This Standard defines the printed image and the nominal dimensions of a font for 7×9 matrix printers. The characters have been designed for both human and machine readability.
At present date the machine legibility of the font has been assessed by simulation on computer with proper attention given to the distinguishability between pairs of characters.
Future experience in reading applications may imply adjustments which will be taken care of in the course of the maintenance of the Standard.
This Standard does not define paper characteristics, print quality or character positioning. These matters will be subject of other standards or publications.