Drawing up some ASCII art diagrams of the internal Continuity control flow, these are my two best variations so far. First is a bit too tall:

  +---------+      +---------+      +--------+                         
  | Browser | <--> | Adaptor | ---> | Mapper |                         
  +---------+      +---------+      +--------+                         
                        ^               |                              
                        |               |                              
   +--------------------+               |                              
   |                                    |                              
   |        +-------------+-------------+                              
   |        |             |             |                              
   |        V             V             V                              
   |   +---------+   +---------+   +---------+                         
   |   | Session |   | Session |   | Session |                         
   |   | Request |   | Request |   | Request |                         
   |   | Queue   |   | Queue   |   | Queue   |                         
   |   |         |   |         |   |         |                         
   |   |    |    |   |    |    |   |    |    |                         
   |   |    |    |   |    |    |   |    |    |                         
   |   |    V    |   |    V    |   |    V    |                         
   |   |         |   |         |   |         |                         
   |   +---------+   +---------+   +---------+                         
   |        |             |             |                              
   |        V             V             V                              
   |   +---------+   +---------+   +---------+                         
   |   | Current |   | Current |   | Current |                         
   |   | Request |   | Request |   | Request |                         
   |   +---------+   +---------+   +---------+                         
   |        |             |             |                              
   |        V             V             V                              
   |    +------+      +------+      +------+                           
   |    | Your |      | Your |      | Your |                           
   |    | Code |      | Code |      | Code |                           
   |    +------+      +------+      +------+                           
   |        |             |             |                              
   |        V             V             V                              
   +--------+-------------+-------------+                              

Too tall because it doesn't quite fit on a 24/25 line high terminal. Here is my revised version, which not only fits but is also more accurate in the relationship to the "Your Code" nodes.

  +---------+      +---------+     +--------+                         
  | Browser | <--> | Adaptor | --> | Mapper |                         
  +---------+      +---------+     +--------+                         
                        ^              |                              
                        |              |                              
  +---------------------+              |                              
  |      +-------------------+---------+----------+          
  |      |                   |                    |              
  |      V                   V                    V              
  |    +---------+         +---------+          +---------+         
  |    | Session |         | Session |          | Session |            
  |    | Request |         | Request |          | Request |         
  |    | Queue   |         | Queue   |          | Queue   |         
  |    |    |    |         |    |    |          |    |    |        
  |    |    V    |         |    V    |          |    V    |         
  |    +---------+         +---------+          +---------+          
  |      |                   |                    |             
  |      V                   V                    V              
  |  +-----+   +------+   +-----+   +------+   +-----+   +------+
  |  | Cur |<->| Your |   | Cur |<->| Your |   | Cur |<->| Your |
  |  | Req |   | Code |   | Req |   | Code |   | Req |   | Code |
  |  +-----+   +------+   +-----+   +------+   +-----+   +------+
  |     |                    |                    |
  |     V                    V                    V
  +-----+--------------------+--------------------+

("Cur Req" == "Current Request")