+---------+
| Block 0 | .REL Control Block
+---------+
|  Root   | Overlay handler and tables
| Segment |
|  text   |
+---------+
| Overlay |
| 1 data  |
+---------+
     .
     .
     .
+---------+
| Overlay |
| N data  |
+---------+
|         |
|         | Root relocation information
|         |
+---------+
|   -1    | End of root relocation information
+---------+
|         | Overlay segment 1 relocation information
|         | 
+---------+
|   -1    | End of overlay 1 relocation information
+---------+
     .
     .
     .
+---------+
|         | Overlay segment N relocation information
|         |
+---------+<-+
|   -1    |  |
+---------+  +--  Present if there is extra root information,
|         |  |    such as relocation overlay handler information.
|         |  |
+---------+<-+
|   -2    | End of all relocation information
+---------+