INVISIBLE attribute
The INVISIBLE attribute prevents field data being readable on the
screen.
Syntax
INVISIBLEUsage
The INVISIBLE attribute can be used for EDIT and
BUTTONEDIT fields, to obfuscate the value of the field. A typical usage of
INVISIBLE is for password entry fields.
Characters that the user enters in a field with the INVISIBLE attribute are
obfuscated during data entry. When displaying data by program to a field (with DISPLAY TO / BY NAME or when the interactive dialog synchronizes the form field content with
the program variable), the INVISIBLE attribute will also make the field content
unreadable.