OK, this is probably a dumb question, but I can't find the answer so I'll ask it anyway: How can I make the text larger in the markdown editor area in the backend?

My eyes aren't quite as sharp as they once were, so trying to edit code at that size on a small laptop is not an option.

Thanks in advance for your help with this!

On the main menu of the back-end, click on "Settings" and then select "Customize back-end". Select the "Styles" tab and enter CSS to increase the ace_editor font-size to the desired value (16px in this example):

.ace_editor {font-size: 16px;}

You should see the difference after you click on "Save" and refresh the page. I know this is a late response, but I've just started using October.

Indeed! That does the trick. Thanks for the reply (you weren't late; I just posted this too early).