                       |
|         @                                                 |
|                                                           |
o-----------------------------------------------------------o
| ( ( x ( x )) (( x ) x ) ( ( x ( x x ) x ) ))              |
o-----------------------------------------------------------o

With this epiform, as I'll call it for the sake of saving two breaths,
I can now rename e_1 and e_2 through the use of the following devices:

1.  A bare terminal node, &quot;o