
   Two kind of controls
  ======================

  
   o One with traps, for handling end-of-paragraph situations
   o One driven by the content: insert a title, paragraph...
  
  
  
          .PP
          hello world hello world    hello world. yeee-haw!
          hello world hello world    hello world hello world
          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   .QP
          hello world hello world       hello world hello │
          hello world hello world             hello world │
          hello world hello world   .PP
          hello world hello world   hello world hello world
  
  (next page)
  
          hello world hello world   hello world hello world
          hello world hello world   hello world.
  
  
  
