
   Document interface
  ====================

  
  What the user write:
  
          .PP
          hello world hello world hello world hello world
          hello world hello world hello world. yeee-haw!
          hello world hello world hello world hello
          .
          .SH
          HEADLINE IN ALL CAPS BECAUSE WE CAN
          .
         .PP
          hello world hello world hello world hello world
          hello world hello world hello world hello world
          hello world hello world hello world hello world
          hello world hello world hello world hello world
          hello world hello world
          .
          .QP
          hello world hello hello world
          .
          .PP
          hello world hello world hello world hello world
          hello world hello world hello world hello world
          hello world.
  
  
