[ Type code = Z ] Enough leading zeroes will be added to fill the field to the xmax size. Note that unlike most INFLD formatting options, the leading zeroes are actually returned in the field. On preloading a Z field, the leading zeroes are removed prior to editing, except that if the field is blank, one zero is left.
History
2011 January, A-Shell 5.1.1200: INFLD refinement: When using type Z (zero fill), leading zeroes are no longer stripped on entering the field for date fields or form fields. Stripping the leading zeroes in such cases may mess up the alignment of the form or the interpretation of the individual digits in the date.