yet another new project

The way roles are marked on a word's arguments depends on whether or not the word acts like a verb syntactically. If not, the 1st argument is coreferential, any 2nd argument immediately precedes the word and is not marked for case, and any 3rd argument isn't expressed. If so, the arguments take case postpositions (Agt, Pat, or Thm) according to the word's verbal argument structure. The postpositions correspond to groups of roles. An exception is that nouns (and maybe certain other words) always have unmarked 2nd arguments, even when acting as verbs. A table of argument structure classes follows.
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If the word isn't a lexical noun and it doesn't already have an Agt-group argument, it can take the Causative suffix, which adds a new Agt-argument as 1st argument, shifting the old 1st argument to 2nd argument and any old 2nd argument to 3rd argument.
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The reflexive pronoun coreferences the word's 1st argument, regardless of the syntactical situation.