Each detail and example should develop logically and refer back to the original focus. A basic essay consists of three main parts: Cañada College A Model Essay: One Way to Improve Students' Writing. - ERIC

Demonstration of how to connect ideas back to a central focus to maintain cohesion . Technical "Zip" Contexts

from title and subheadings to sentence and paragraph structure, word selection, errors to avoid, and revision. ERIC - Education Resources Information Center (.gov) A Model Essay: One Way to Improve Students' Writing. - ERIC

If your interest is more technical or digital, the "zip" aspect suggests compression or packaging:

Examples of specific rhetorical strategies like definition, negation, or function .