<fd:repeater-action id="add" command="add-row"
repeater="repeater-id"/>: when activated, adds a row to the
sibling repeater named "repeater-id".
<fd:repeater-action id="rm" command="delete-rows"
repeater="repeater-id" select="select-id"/>: removes the
selected rows from the sibling repeater named "repeater-id". The
selected rows are identified by the boolean field "select-id" present
in each row.
<fd:repeater-action id="insert" command="insert-rows"
repeater="repeater-id" select="select-id"/>: inserts rows before
the selected rows from the sibling repeater named "repeater-id". The
selected rows are identified by the boolean field "select-id" present
in each row.