Type/Length: CHAR, 40
Modifiable: YesPURPOSE: @FIELD_ID is a modifiable system field that contains a string which identifies the form field where the cursor is currently located. The default value is spaces.
@FIELD_ID is assigned the value from the form layout's ID substatement of the FIELD statement where the cursor is currently located. If a field does not have a ID substatement, @FIELD_ID is set to spaces.
SEE ALSO: ID substatement for the FIELD statement in the form layout (earlier in this section).