Some non-DVR TV Boxes allow you to record programs to your VCR or DVD player by using the On-Screen Guide to tune the TV Box to the correct channel at the correct time.

How to Set a Recording

Press the Info button on your remote while browsing TV listings, or press the Info button twice while watching TV.
If your TV Box has the capability to set or cancel a recording, a circle containing the letter R will appear at the bottom of the screen.
Use the arrow buttons on your remote to highlight the recording option.
Select Record and confirm it by pressing the OK button.
At the date/time of the set recording, the TV Box will automatically tune to that channel and the following message will be displayed: VCR Recording in Progress.
Note: You do not actually have to have a VCR or DVD player (with recording functionality) hooked up for the recording to be set. If you receive the VCR Recording in Progress message but do not have a device connected, it's likely that a recording was mistakenly set through the guide.

If you do have a VCR or DVD player connected and are receiving the VCR Recording in Progress message, but are unable to record programs, please follow the instructions listed in Connect Xfinity TV Box to Your DVD or VCR Player.

How To Cancel a Recording

If you are already on the channel being recorded, simply click the Stop button on the remote.
An image of the Stop button, which is a square button on a remote control, is displayed

Or, from the guide:

Access the guide and locate the channel being recorded.
Press the Info button.
Use the arrow buttons on your remote to highlight the recording option.
Select Do Not Record and confirm cancellation by pressing the OK button.