A user-assigned number that can be used to control the tabbing sequence within a group of form fields.
An integer (0 to 999)
If FFSN is set to 0, the software automatically resets it to match the Z-order (WdgZOrder) specified for the form field. Accordingly, if all fields in a form are painted with FFSNs of 0, then the Painter’s structure diagram automatically defines the tab order when WINDOW SET TABORDER BY TABINDEX is in effect. (BY TABINDEX is the default setting for graphic windows.)
FNum, FSN, WdgZOrder