DefaultDoubleColumn Region in Oracle OAF

The defaultSingleColumn region is used for holding the items in double column. This region is deprecated and you should not use it in your page. Whenever there is need for showing a double column region, use the messageComponentLayout region. Sometimes you may have to select this region to use the Region using wizard functionality, but change the region style to
messageComponentLayout immediately after using the wizard.

The java bean associated with this region is OADefaultDoubleColumnBean.