How to backup iCal calendars in OS X

I was looking for a way to backup and restore iCal calendars on my MacBook running OS X. A quick Google search took me to a page on Apple's website. I tried to follow the instructions but it appears the page is outdated. Here is the correct information:

iCal saves your calendars as .ics files in this folder: ~/Library/Application Support/iCal/Sources/. There should be some folders in the Sources folder - each one corresponds to a particular calendar in your iCal (e.g. home, office etc). I have no idea why their names appear so funny - lots of alphabets just jumbled up together. Anyhow, you can back up your calendars by copying this folder to your backup location (file server, external hard drive, CD-ROM, and so forth).