An ordered list of units, representing a merged view of rows in a local, remote, and (optionally) parent table.
Add a local/remote/parent triplet.
lthe row/column number in the local table (-1 means absent)
rthe row/column number in the remote table (-1 means absent)
pthe row/column number in the parent table (-1 means absent, -2 means there is no parent)
Returns: the list of units in this ordering
ignoreParent () : Void
Force any parent row/column numbers to be ignored and discarded.
Replace the order with a prepared list.
lstthe new order
toString () : String
Returns: the list of units in text form