CONFIG.DEF

CONFIG.DEF is a text configuration file placed in the DATA directory
This file has different names between games: CONFIG.DEF, Config.def, config.def
It has differences between games.
Note: Possible values 0 or 1 means disabled or enabled.

Key	Description	Possible values	Example	Default or initial value	Mandatory	Supported in games
FullScreen=0		0,1	0	1	Yes	SBD,SB1,SB2,SED,SE1,SE2,OE3
TrueColor		8,16,24			Yes
MouseType					Yes
SpeedRate					Yes
Timer		a number	50ms	50ms	Yes
StrictCompatibility	If enabled, OE will behaves as much as possible as games released in 1998 and 2002, this means, that new OE features will be disabled.	0,1	1	0	No	OE3
DisplayResolutionStandard	VGA:width=640 height=480 QuadVGA:width=1280 height=960	VGA, QuadVGA	QuadVGA	QuadVGA	No	OE3
Cheats	If enabled, cheats will be enabled, otherwise cheats will be disabled.	0,1	0	1	No	OE3

Across versions

        FullScreen=0
        TrueColor=8
        MouseType=1
        SpeedRate=1
        Timer=50ms
        StrictCompatibility=0