DocLine is an object that can be retrieved from a DocContent object.
In FORMS’ Samples\Plugins\Document content folder you can find an example of how to use the DocContent, DocBox, DocLine, and DocWord objects and their methods.
GetBottomNeighbour
GetEndXPos
GetEndYPos
GetIndex
GetLeftNeighbour
GetRightNeighbour
GetStartXPos
GetStartYPos
GetTopNeighbour
GetType