This document discusses identifying and revising run-on sentences. It defines run-on sentences as having two or more independent clauses joined incorrectly. There are two types of run-on sentences: fused sentences which are joined with no punctuation, and comma splices which are joined with only a comma. The document provides four ways to revise run-on sentences: using a comma and conjunction, separating clauses with a semicolon or semicolon and transitional phrase, dividing into separate sentences, or changing one clause into a subordinate clause.