Changes to "Main Page" between r20 and r21

Changes to Main Page between r20 and r21

'''What you will find here'''
   * Information about [Threads]
   * Information about [Random Number Generation]
   * Information about [Tcl]
   * Information about interesting [Current Projects]
   * Information about [Roy Keene]
   * Random [Demonstrations]
   * Random [Scripts]
   * Random [Diatribes]
   * Random [Links]
   * My [Friends]
   * My [Scratchpad]

Legend

     Only in r20
     Only in r21
     -->      Modified slightly between r20 and r21