Specifies whether the user can access the field. Valid values are as follows:
- no (the default for variable fields)
- Sets the field so that the user can overwrite the value in it.
- skip (the default for constant fields)
- Sets the field so that the user cannot overwrite the value in it. In addition,
the cursor skips the field in either of these cases:
- The user is working on the previous field in the tab order and either
presses Tab or fills that previous field with content;
or
- The user is working on the next field in the tab order and presses Shift
Tab.
- yes
- Sets the field so that the user cannot overwrite the value in it.