CheckMark Extension adds years to your life

[UPDATE: The new Comment Bank feature in Classroom makes this extension obsolete.]

Well, maybe not years, but I probably just saved over an hour of typing the same comments on 40 tests. It adds up.

CheckMark is an extension that lets you add customized comments (or canned comments if you teach English Composition on the grade level it's aimed at) on Google Docs at the click of a button. They can be as long as you need, and can include multiple languages, symbols or anything else you can put in a Google Docs comment (i.e. no special formatting).

Go the Chrome Store and get CheckMark

When you install it, it will appear in your Chrome Menu in the upper-right hand corner.

If the first time you click it it does not say Enabled, enable the extension.

At first it will present you with a list of canned comments for English Comp. If they work for you, enjoy. If they do not, you can delete every single one by clicking the red X.

Here's where it gets useful. Let's say you start grading and soon realize that several students have made the same mistake. Do you want to type "I think you confused Jefferson Davis and Thomas Jefferson" on 40 Google Docs? I didn't think so.

So let's go:

Click on the Extension, and then on the Preview Edit Pencil.

Click on the green + sign. Give your comment a 3-4 letter abbreviation so that you can readily identify it, and type (or paste) the comment you're going to be re-using. Click Apply.

I, by the way, ended up with about 11 "stock" comments for this particular test.

Back in Google Docs, when you come to one of those answers...

 Highlight a word in the answer, and the CheckMark bar will appear translucently above the line.

If you hover your cursor over the little blue box it will get darker and he comment will appear in a hover text box, just to be sure you're choosing the correct response.

 Click the blue box and CheckMark will automatically enter the pre-selected comment into Google Docs comments and close the comment box.

Downsides: If you're moving among different assignments, and you don't need CheckMark for one class, (mine were VERY test-specific) the only way to silence it is to [click the 3 square dots at the top-right of your Chrome browser] go into More tools, Extensions, and temporarily disable the extension.
Also, I have had limited success with it fully syncing between computer, and have gone home and not found all of my added comments available.
But I suspect these will get ironed out in future iterations.

I still think it is a fantastic addition to my Google Docs tool case.