The select-menu lets you select records from a list of records. Depending on the context, selected records will be used by Delete, Extract, Undo, Join, etc.
In the select-menu, records are presented as in the main-menu. You can order the next or previous record, search with a pattern and re-search, or goto a record with a specific number.
A record is either marked or unmarked. Initially all records are unmarked. With toggle you can change the marking of the current record. Toggle toggles the marking of all records. Clear makes all records unmarked again. Use (Clear,Toggle) to mark all records.
With Mark you can specify a pattern (regular expression) for each field. Every record with a field matching the corresponding pattern is marked. Empty patterns are left out of the marking process. Unmark is like Mark except that marks are removed.
With `<' (previous mark) and `>' (next mark) you can step through the records marked sofar. With `(' (previous unmark) and `)' (next unmark) you can step through the unmarked records.
When you are done marking, you can either select the current record, Select all marked records, or exit to abort the selection process altogether.