As a developer I want the coordinates of merged metadata sections

[mjy]

Aquiring these metadata should be possible via some click-event. Provide coordinates (same format as per slide sections) for each "largest" section in an array something like:

{
  'a' => [ [first rect coords], [second rect coords] ],
  'b' => [ [third rect coords] ]
}

As a developer I need the coordinates of each metadata section according to the following:

• If sections of the same type are adjacent and they form a rectangle, then they should be merged into a single rectangle.:

• If sections of the same type touch, but collectively form non-rectangular shapes, then they should be decomposed into rectangles by column: