The SECURE clause prevents operator-keyed data from appearing on the screen.
- The SECURE clause is allowed only with input and update fields.
- This clause can be specified on a group screen item, in which case it applies to all suitable elementary items which are subordinate
to that item.
SECURE and NO-ECHO are equivalent.
- When the SECURE clause is specified for input fields, only spaces and the cursor appear in the screen item. For update fields,
the original contents of the field are displayed, but cannot be altered.