In-Page Connectors should be used to join the same transition together, without crossing existing transitions. For readability reasons descriptive names should be chosen.
Off-Page Connectors are necessary when a transition needs to return to a previous higher level off-page chart. It is essential that the connectors have meaningful names and the two charts that are connected can be shown side by side, with the connecting transition being easily identifiable Using similar positions of the connector on each chart might facilitate this.