       C
   B...C  = B ^F C              G H D E B C
   B^-    = B^..B
          = ^B^1 B              E I J F B
   C^@    = C^1
          = F                   I J F
   B^@    = B^1 B^2 B^3
          = D E F               D G H E F I J
   C^!    = C ^C^@
          = C ^C^1
          = C ^F                C
   B^!    = B ^B^@
          = B ^B^1 ^B^2 ^B^3
          = B ^D ^E ^F          B
   F^! D  = F ^I ^J D           G H D F</pre>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="_parseopt">PARSEOPT