Definition sequences for character fonts. It is possible to define one or more font definition sequences in specifying for each one : - the number of "CPI" (character per inch). - a code (optional) that indicates if the sequence is valid for portrait (P) or landscape (L) mode. In the absence of this code, it will be valid for the two. - the sequence itself. - the number of lines per page. If this field is not assigned, the number of lines is assumed to be that defined in the general parameterization of the printers. - the number of characters per line. In the absence of this information, this is calculated as a function of the "CPI" and the width in 10 CPI defined in the general parameterization of the printers.