WrenSense: Editing — What is it?

Basically there are 3 types of editing. Here they are along with a definition of each.
 
 
PROOF READ
“Proofreading means examining your text carefully to find and correct typographical errors and mistakes in grammar, style, and spelling.”
https://writing.wisc.edu/Handbook/Proofreading.html
 

LINE EDIT
A line edit addresses the creative content, writing style, and language use at the sentence and paragraph level.
 

COPY EDIT
 the goal of a copyedit is to address flaws on a very technical level – to make sure the writing that appears on the page is in accordance with industry standards. This is like an incredibly high-end proofread. Internal consistency means your plot, setting, and character traits don’t have discrepancies
http://nybookeditors.com/2015/01/copyediting-vs-line-editing/