This is very cool. And you can quickly create mockups for roguelike levels.

                                     +-------+     +------------+                                   
            +---------------+        |       |     |     >      |     -4/124                        
            |               |        ||   <  | +---+%%%         |     15/15                         
            |   >   =       |        |       | |   |%     \     |                                   
            |               +--------+   %   | |   |     !!     |                                   
            |         %     |        |       | |   |            |      +----+                       
            |     %         |        |       | |   |            |      |%   |                       
            +---------------+        |  %%   +-+   +-----+------+      |    |                       
                                     |       |           |             |   >|                       
                                     |       |           |             |"   |                       
                                     |   %   |           |             +-+--+                       
                                     +----+--+           +---------+     |                          
                      +---------+         |                        |     |                          
                      |((       |         |    +------------+  +---+-----+--+                       
                      | ( O     |         |    |~~ P        |  |            |                       
                      |  @K  %  |         |    |~~~~     <  +--+      %   / |                       
                      |   %  Y  |         |    |~~~         |  +------------+                       
                      |   %   Y |         |    |            |                                       
                      |    c    Y---------+----+      ]     |   Slow Poisoned                       
                      |         |              |            +                                       
                      +---------+              |            |                                       
                                               |   <        |                                       
                                               +------------+          D:24                         
                You teleport.                                                                       
                The centaur shoots an arrow of flame. The arrow hits you.                           
                You die...                                                                          
                Xom says:"I guess I need a new plaything now."