Abigail- Proofreading

to read in order to detect and mark errors to be corrected
to read in order to detect and mark errors to be corrected
to read in order to detect and mark errors to be corrected

My Meaning:
Proof reading means to check over the work and to clear all mistakes, so when read the reader will not notice any mistakes.

An Example:
Editors have to proof read the authors work before sending it to the editor