INPUT ARTICLE: Article: The rectangle must be the same size as the opening of the frame. If the frame is new, take out the paper insert that comes with it and trace the outline onto your board. You can also trace the inside glass window. Draw the outline on the board using a pencil.  If you have an old frame with no glass, use a ruler to measure the back opening of the frame. Draw a rectangle with the same dimensions on your board. Do not use the dimensions from the front opening of your frame. Plywood also works if you don't have medium-density fiberboard. Use an electric jigsaw or manual hand saw to cut along the outline you traced. If you are unable to do the work yourself, bring the dimensions to the hardware store and ask a worker in the lumber section to trim the board down for you. After cutting the board, use rough sandpaper to remove any splintering edges around the perimeter. You may also need to use the sandpaper to shave away some of the board if it will not fit into the frame perfectly. Use a large sponge brush or standard flat painter's brush to brush on a coat of primer. Let the primer dry completely before applying the chalkboard paint. The primer will make it easier for the paint to stick to the surface of the board. Use a painter's brush or roller to apply two even coats of black chalkboard paint to the primed board. Even coats will reduce the amount of ridges that develop on the surface after the paint dries.  Allow the paint to dry completely between coats. Chalkboard paint is formulated to develop the surface texture of a chalkboard upon drying. It can then be written on with chalk. Applying two coats will make the effect stronger. Insert it with the chalkboard side facing the front. It should slide right in, similar to if you were replacing the glass in the frame. If the backing will fit inside the frame with the board, slide it behind the board to secure everything in place. If you cannot use the backing, use masking tape or packing tape to fix the back of the board to the back of the frame. Alternatively, you could use heavy staples to attach thick twine or thin rope to the top two corners of the frame and hang the chalkboard on a hook using this string.

SUMMARY: Trace a rectangle onto medium-density fiberboard. Cut the board along your traced lines. Smooth out the edges with sandpaper. Apply one coat of white latex primer to one side of the board. Paint the board with two coats of chalkboard paint. Fit the chalkboard into the back of the frame. Secure the chalkboard in place. Hang the chalkboard by the hook attached to the frame's backing.

In one sentence, describe what the following article is about: While rare, you may be unexpectedly prompted to “verify” your payment method while making a reservation. This should only happen if there's an issue with the credit card or potential fraudulent activity on the account. No matter the cause, verifying your account by using the app's built-in camera feature will have you up and running in no time. You will want the app to have a clear, crisp photo of your payment card. Once the card is precisely within the boundaries of the green box, the photo will automatically snap. The app should automatically fill in the expiration date, but double-check the listed date to make sure it matches what's on your card. Click “Done” when you are finished. Uber may request a photo of your state or country identification card. If so, lay it on a flat surface as you did your payment card, then line it up within the green rectangular boundary. As before, the photo will snap automatically. Click “Done” when you are finished.  Once the appropriate information is attached, Uber will review your account and take the attached information into consideration. You will be notified via email about the status of your verification. If you need any additional help, email Uber support at support@uber.com.
Summary: Have your payment card ready. Place your payment card on a flat, well-lit surface. Line the card up so that it is within the green “Hold card here” boundary on the screen. Verify the expiration date in the “Expires” field. Attach your Photo ID, if prompted.

INPUT ARTICLE: Article: Usually the drain of a washing machine is a pipe behind the machine that the hose on the machine pours into. The hose is sometimes attached tightly to the drain or the hose may simply be pushed inside of it. When identifying where the drain is, you will need to differentiate it from the hot and cold water lines coming into the washer. The hot and cold water lines should be smaller than the drain pipe and they may be marked with the colors red and blue, to show which is hot and which is cold. If your washing machine is draining slowly but it is not completely clogged, you can try simply pouring very hot water down the drain to clear it out. This can release built up soap and scum that is narrowing your drainage pipe.  If you run your washer on hot most of the time, then this may not work for your drainage problem, as you have been doing this repeatedly. However, if you only run cold cycles, then pouring hot water down the drain may be worth a try. In areas that freeze during the winter, drainage pipes can freeze and get blocked up with ice. If your area is frozen and you think you have a clogged drain, try pouring hot water down the drain to get rid of any ice that may have accumulated. If your washing machine drain is clogged, one way to clear it is to use a commercial drain cleaner. In general, these products can be very helpful for minor clogs but have limitations when it comes to unclogging a completely clogged pipe. When buying a commercial drain cleaner, be sure to get one that is safe to use with your specific type of pipes and your type of drainage system. Some strong products that contain sulfuric acid can actually damage PVC pipes and they are generally not good for the environment as well. To use a commercial drain cleaner, you will need to detach the drain line from the machine and put the cleaner straight into the drain. On some machines you can simply pull the tube coming off the machine out of the drainage pipe. On some, however, you will need to unscrew the drainage tube from the machine at the bottom of the back of the machine. If you are doing this, be prepared for some water to come out of the machine and the hose to the drain. This usually begins by pouring the product down your drain with some very hot water. Then you will need to wait a specified amount of time for the product to do its work. Finally, you will need to flush the drain once the product has had time to clear it.  Be sure to rinse out the drain cleaner after the specified amount of time. Leaving it on too long can damage the pipes.

SUMMARY:
Find the drain. Pour hot water down the drain. Buy a commercial drain cleaner. Detach the drain. Follow the directions on the packaging.