fx_IsFxOn()

Tests for installation of the color effects system.

Syntax:
     fx_IsFxOn()   ->   lInstalled

Arguments:
     None.

Returns:
     Returns a logical TRUE or FALSE value (.T./.F.) indicating whether
     or not the color effects system is installed.

Description:
     fx_IsFxOn() can be used to determine if the color effects system is
     installed without actually installing it.  This command may be used
     at any time.

Example:
     // If the color effects system is installed,
     // then fade some attributes.
     IF fx_IsFxOn()
        fx_Fade( "n", "w" )
     ENDIF