1..9 - Set record mark

If one of the statement codes 1..9 is sent with the function key [F3] then the corresponding record marks are set in the specified record (see section “Record marks”). These record marks can be used, for example, to position the data window or to copy the marked records (see @ON statement).

Statement code	Key
1..9	[F3]

The @ON statement (format 4) can also be used to set record marks.