Eric's Quake Gravity Script 
         Ver.     1.0
 
    Change the gravity in the level
  made easy!  
         O - More gravity
         P - less gravity
         INS-Highest Gravity
         HOME-Normal gravity
         PGUP- Lowest gravity
 
      To install, just put grav1.scr in your ID1 directory
    and add the line
                 exec grav1.scr
      in either you autoexec.cfg ; or