@DATABASE GRAC V2 TUTORIAL
@$VER 1.0 (9/6/97) © 1997 Andy Gibson
@node main "FLAGS"

      Flags are a little bit confusing to follow in GRAC and I'll try and
      explain them the best I can for you here.

      Basically  you  should  think  of a flag as an on/off switch if you
      like.  You  can  easily  make  objects  vanish  from  the screen by
      switching their flag off.

      Flags are associated to everything in GRAC that you want to use.

      Flags  can  be  used  to stop a character walking on a zone and all
      sorts of weird puzzles etc. The best way to get to grips with flags
      is to follow my tutorial on creating a GRAC game.

      @{"  " link "GRAC_Tutorial.Guide/main"} TUTORIAL

      Via  the tutorial I'll be showing you how to use flags in your game
      for  a  few  things. But please note that flags can be used in many
      different ways, not just for the examples I give.

      In GRAC there are a total of 1000 flags for you to use and abuse!

      Flag  0 cannot be altered by you though. It is a preset set to TRUE
      (or ON if you prefer) so that all walk zones etc are ON by default.
      You should never alter flag zero and to be honest, you never will!

      As for flags 1-999, well they are all yours to do with as you wish.
      Flags can hold any value you like such as 1,2,3,4 etc etc etc. Even
      negative numbers too.

      It  doesn't  matter what you set the value of a flag to either when
      working  inside a script. However, flags associated with objects or
      zones  do  require  to  have  either  a  value  of 0 for false or a
      negative number to make them true (On).

      eg  If  you  are  using  Flag  1 for an object such as a coin, it's
      original  value  would  be  0, but you should make the value as -1.
      This  way,  when  a  player picks up the object, the object will be
      able  to  disappear  from  the  screen. The same applies to all all
      objects which you want to be inventory items. (Objects which can be
      picked up).

      Let's  say  that  in  your  room  you have three items you wish the
      character to pick up. A Rock, A Match and a Torch. Simply apply the
      following values to each of them like so...

      Rock -1
      Match -2
      Torch -3

      This must be done via the @{b}ROOMS@{ub} - @{b}FOREGROUND OBJECTS@{ub} screen.

      @{"  " link "GRAC_Obj_Foreground.Guide/main"} FOREGROUND OBJECTS

      It's  best  to have a bit of paper beside you while creating a GRAC
      game  and keep note of all flags used. This way you will be able to
      return  to  your game in a few weeks and know exactly which flag is
      used for which object etc.

      For  further details on flags, you can check out page 32-33 of your
      GRAC manual also.

@endnode