The new blending mode features for midtextures and FOFs from !1534 (closed) are excellent, but only allow additive/subtractive/reverse subtractive midtextures at 100% strength. Instead of only using actions 910 to 913 for additive, subtractive, reverse subtractive and modulate respectively, this branch changes it to the following:
910 to 919 are used for 100% additive to 10% additive.
920 to 929 are used for 100% subtractive to 10% subtractive.
930 to 939 are used for 100% reverse subtractive to 10% reverse subtractive.
