Apple’s just-released (and free) software update for the Mac comes with a series of nifty folder tricks up its sleeves, including the ability to open a folder as a tab in an existing folder window—yes, kinda like you can in a browser.

Note: As I’ve written before, it’s never a particularly good idea to install a major system update like “Mavericks” on Day One; instead, wait a few days or weeks until the first wave of inevitable bugs (like this one) has been squashed. If you’re dead-set on installing Mavericks right now, make sure to back up your Mac first, then open the Mac App Store and click on the big Mavericks promo.

Read on for five neat folders tricks that “Mavericks” can bring to your Mac, starting with…

1. Open a folder as a new tab

Got a folder window open on your desktop? Does the folder contain any subfolders? If so, right click on one of those subfolders, then select Open in New Tab.

When you do, a new folder tab will appear in your original folder window, just like a new browser tab would in Safari or Google Chrome.

You can switch folder “views” (icon, list, columns, etc.) in one tab while keeping the folder views different in other tabs, and you can also navigate to a completely different folder within a tab.

Just drag a folder tab onto the desktop to turn it into its own window.

Want to re-arrange your tabs within a folder window? Just click and drag a tab, just as you would in a browser window.

2. Drag a tab out to create a new folder window

So, you’ve got a bunch of folder tabs sitting in a single folder window. What if you want to turn a tab into a separate window?

Again, just as you might with a browser tab, just click a folder tab and drag it out onto the desktop; when you do, it’ll snap into its very own window.

3. Take all your open windows and merge them into one tabbed window

Got a bunch of open folder windows that you’d like to merge into one?

Want to take all the open folder windows on your desktop and merge them into one? Easily done.

Click the desktop (to open the Finder menu at the top of the screen), click the Window menu, then select Merge All Windows.

4. Expand a folder to fill the screen

Thanks to the Mavericks update, you can now switch on “full-screen” mode for folders, just as you can for browsers, the Mail app, iPhoto, and other Mac apps.

Just click the two little arrows in the top-right corner of any folder, and whoosh—it’ll expand to fill the entire screen.

Want to shrink a folder back to normal size? Move your mouse to the very top of the screen until the menu bar appears, then click the arrows in the corner again.

Just drag a file in one folder tab and drop it onto a neighboring tab.

5. Drag files from one folder tab to another

One of the plusses of Mavericks’ new folder tabs is that they make it easy to shuffle files from one folder to another.

What’s the trick? Easy: just click and hold a file in one folder tab and drag it onto the tab of another folder.

When you do, the top of the second folder tab will flash briefly, and then the tab itself will open; once it does, just drop the file wherever you’d like it to go in the tab.

Looking for more Mac tips? Click here!

Correction: In the original version of this article, I wrote that it’s still possible to make folders open as brand-new windows under “Mavericks”; as a (very irate) reader has pointed out, though, that appears to be no longer the case. My apologies for the goof.