What is "bleeding" in comic pages?

[barbsart]

I've decided that I want to draw my comic in a traditional page way instead of a more digital mobile way, as I aspire to get it printed someday. I've been looking into drawing comic pages like that and I keep hearing people say that you don't want your pages to "bleed" and they're using this kind of template:

What does this mean, and what would I use this kind of template for?

[phoenixrenaissance]

Bleed refers to the amount of loss you can expect to have when pages are trimmed for a print job. By drawing all the way out to the bleed margins (and not putting anything important in there) you end up with cleaner edges and no stray white marks when the pages are printed for a book or some such.

[Mocha]

Basically it's just letting your drawings go outside the frame.

[Kayke]

Basically you want to keep all your lettering in the safe zone and most of your panels in that place as well. But if you want a panel to touch the edge of the page you would draw in the bleed zone. This is called "full bleed."

When a book is being printed, assembled, and cut it's not an exact science so you need a little wiggle room so that nothing important gets cut off and so that full bleed art actually goes all the way to the edge of the page.

[Shanny8]

I use that same template when doing my pages. Like @Kayke and others have said, bleeding is basically drawing your art all the way to the edge of the page; the key is to keep all the pertinent/important art stuff within the safe zone- that way when you are cropping your pages OR if you are getting a book printed the only thing that will be cropped/cut is the excess stuff on the outer perimeter. Keep all the lettering within the area marked as the "safe zone"; that way the lettering doesnt get cut out.

[anitacomics]

you already got your reply, but I wanted to add that bleeding must be considered even if you draw digitally and want to print. It's not something related to drawing on paper only