Just want someone to check if I have understood it correctly. According to FCOM, if we are using the RTOW charts based on CG being at 25% then we adjust the weight (1 ton) and speeds (1 knot) if CG falls between 25 and 27%. If CG is between 15 and 25% then we use the OCTOPUS software and not the RTOW charts for takeoff performance. Thanks.