In one sentence, describe what the following article is about: Locate the power button on your iOS device and press down. Navigate to the browser, and tap the icon to open. You'll need to type https://m.facebook.com/ into the search bar, and press search. Enter the necessary information. You are now logged out of your Facebook account.
Summary: Turn on your device. Launch Safari. Go to the Facebook website. Log in to Facebook. Tap on Logout.

In one sentence, describe what the following article is about: (You can also place your thumb behind the first valve and this will give you the maximum function of your fingers to press the key down.) This thumb will support some of the weight of the trumpet. It should be placed beneath the lead pipe, or the pipe which attaches to the mouthpiece. Do not bend your thumb, as this can restrict the movement of your other fingers. Some instructors will recommend that you keep your thumb rested against the first valve casing rather than between the first and the second. This technique is designed to help you keep your thumb straight and should not affect the way the trumpet is supported. Pressing different combinations of valve keys is how you play different notes. Using the balls of your fingers, press down the keys that correspond to the notes you wish to play. Rest your fingers on the keys when you're not playing. Think of keeping them in the shape of a claw. Curving your fingers will give you the flexibility to play notes quickly. Even if you’re just beginning, practicing this technique from the start will help you as you advance to more complex musical pieces. Your band director will instruct you on the different fingerings used to play notes, or you can use a music book or search for a fingering chart online. It may seem convenient to place your little finger in the finger hook, allowing it to hold some of the weight of the trumpet. However, this will affect your ability to move your fingers freely, especially your ring finger on the third valve. It’s fine to use the finger hook temporarily if you need to use your left hand to turn a page of music or reach for a mute. Just try not to get in the habit of doing it all the time. Make sure that you are keeping your right wrist relaxed. Stiffness in your wrist will affect your ability to press down the valves, and it may lead to wrist pain after long periods of holding the trumpet.
Summary: Rest your right thumb between the first and second valve casings. Strike the valve keys with your right index, middle, and ring fingers. Round the fingers of your right hand as you play. Avoid resting your right little finger in the finger hook. Relax your right wrist.

In one sentence, describe what the following article is about: Vinyl is remarkably easy to keep clean with a simple rinse, if you do it often enough. Unless there is mold or mildew, or tough/thick stains, some high-pressure water should be more than enough.  For single story houses, a garden hose with an attached nozzle should suffice. For multi-story houses, you'll likely not reach without a pressure washer, which can be rented cheaply at most hardware stores. Wind will pick up dust and dirt that may stick to the walls, and slow-drying vinyl can leave streaks. Neither are serious issues, but if you work with the weather you'll have an easier, neater job. You'll be much more effective if you work in small areas, which will help you keep track of what you've done. Furthermore, you want to rinse the walls off before they dry completely to get rid of the dirt for good, which will be impossible if you try to tackle too large of an area. You don't want to wash the walls from the top down, as this will tend to lead to streaks of dirt instead of a clean wall. If using a pressure washer, do not use the highest setting -- keep it low and gentle. If you have "slats," the stacked horizontal bars of vinyl, you want to try not to force the water between the layers of vinyl. As you get higher up the house, the hose will be hitting less powerfully, and this isn't as much of a concern. Still, when possible, blast at a downward angle, or straight on, to prevent loosening the vinyl siding in any way. Work in the direction of curved areas, corners, or molding. Again, you're trying to prevent water from getting stuck or lodged in openings in the siding. If left in dark, cool areas, this moisture can quickly turn into mold or mildew. You want to be careful at any junctions or areas where you can get under the siding, and you want to be especially careful near flimsy screens or windows when using a high-pressured hose. Consider using a long-handled brush, or removing the screens and scrubbing with a cloth and water from the inside of the window. These same rules apply near wiring, plumbing, and gutters as well. At the very least, lower the pressure considerably before proceeding. The first run will dissolved and dislodge the dirt and grime, and it will stay wet as water from above trickles down. Your rinse, which should start from the very top, then removes all of the dirty water to leave your house spick and span.
Summary:
Use a high-powered garden hose for small houses, and pressure hose for larger walls. Plan to work on a sunny day without a lot of wind, if possible. Work on only one wall or section at a time to prevent streaking. Start from the bottom, running the hose side to side as you move up. Spray at eye level whenever possible, preventing water from pushing in between the siding. Work way from the corners, shooting water away from any gaps. Consider cleaning around windows and doors by hand. After you've working completely up from the bottom, rinse the whole wall from the top down.