The original schemas are included in the \original\ subfolder.
You need to copy them to this folder in order to use them.
It is a good idea to keep the original schemas in \original\ as a backup,
or if you need to reference them.

Changed schema files
--------------------
amb.sch
appar.sch
base.arc
doors.sch
envsound.spc
feet.sch
garrett.sch (gar1103 had somehow snuck into garhmmm, removed it (+ other things))
hits.sch
miscsfx.sch (I don't remember how, though, if at all?)
sg2.sch (added a wave for foundmissing)
speech.spc

New schema files
----------------
fire.sch (TDP)
tswtsw.sch (qolelis)