a> de re means "of the thing" and de dicto means "of what is said."  Thus de re issues and claims relate, ontologically speaking, to extra-linguistic reality; de dicto issues and claims relate to linguistic matters only.

b>The clearest explanation of what his logical symbolizations mean is the last paragraph of section 3 (408-409).

c> Ostention is a fancy word for "pointing at something."

d> Anaphora (419): the linguists' name for the linking of pronouns to antecedents.   For example, in b> above, the antecedent of the pronoun "his" is (the actual, not merely possible) Professor Rescher.  That's using anaphora!

1) Rescher (403) says he will move from truths to things to worlds.  Give the pages of the article that focus on each of these three matters, and a brief (one sentence if possible) account of what he says about each of the three.

2) Explain the difference Rescher sees between possibility de re and possibility de dicto.

3) All things considered, how many possible worlds are there (for Rescher)?  Explain his rationale for your answer.