[[Split portion of a mixed commit.]]

[[Split portion of a mixed commit.]]

[[Split portion of a mixed commit.]]

raw literals (in addition to page, direct, default=origin) for experimenting with pdf injection (HH, TH)

default to full italic correction for subscript of integrals by default even if it's maybe too close (HH)

control over nolimits corrections (fonts differ) also with new math constants. Warning: new primitives, format id bumped (HH)

 support of already existing oldmath key in font table plus documenting some yet undocumented properties (no intended functional differences) (HH)