If you are inserting a record into a data file that is using a structure file, the Select a Record Layout dialog box appears.
The green bar indicates where the record will be inserted.
The editor switches to Insert mode, as indicated in the status bar.
For files with variable record lengths that are not using a layout, the length of any new record is set to the file's maximum record length by default. You can change the length of the record (within the minimum and maximum boundaries) by using (Edit Record Length); any new record length is set for the current record only.