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 FT_POPVID()
 Restore previously saved video states.
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 Syntax

      FT_PopVid() -> <nStackSize>

 Arguments

     None

 Returns

     The number of items remaining in the internal stack.

 Description

     This is the complementary function to FT_PushVid().  At some time
     after saving the video states it will probably be necessary to restore
     them.  This is done by restoring the settings from the last call to
     FT_PushVid().  The number of items on the internal stack is then
     reduced by one.  Note that the use of stack logic means that items on
     the stack are retrieved in Last In First Out order.

 Examples

     FT_PopVid()          // Restore video states

 Source: PVID.PRG

 Author: Ted Means