Problem: Write an article based on this summary: Open the Snapchat app. Swipe left on the camera screen. Tap a friend's story to view it. Tap the circular arrow icon on your friend's story.

Answer: Find and tap the {"smallUrl":"https:\/\/www.wikihow.com\/images\/1\/1b\/Iphonesnapchat.png","bigUrl":"\/images\/thumb\/1\/1b\/Iphonesnapchat.png\/30px-Iphonesnapchat.png","smallWidth":460,"smallHeight":460,"bigWidth":"30","bigHeight":"30","licensing":"<div class=\"mw-parser-output\"><p>I edited this screenshot of an iPhone icon.\n<\/p><p>License: <a rel=\"nofollow\" class=\"external text\" href=\"http:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a><br>\n<\/p><\/div>"} icon on your home screen or Apps menu to open Snapchat. This will switch you to the "Discover" screen. You can see all your friends' stories under the "Friends" heading at the top. Tapping will play their story for the first time. The story thumbnail will turn into a circular arrow icon after you view it for the first time. This will replay their story on your screen. You can replay story Snaps as many times as you want until they expire.


Problem: Write an article based on this summary: Define the helmet. Place an antenna on the backpack. Add bands and cuffs. Draw panels on the suit. Sketch the face, if desired. Color the drawing. Admire your work.

Answer: Draw a parallel line beneath the bottom of the helmet. Connect this line to the bottom of the helmet using two short perpendicular lines, keeping the corners rounded.  This portion represents the helmet ring. When locked into place, the astronaut's helmet will stay on. When unlocked, the astronaut can remove his helmet. You can leave the ring as it is or add another small rectangle in the center of it for further detail. Draw a short, curved line poking up from one top corner of the backpack. Add a small circle to the top of this line. The overall length of the antenna should be no longer than one-third to one-half the height of the backpack itself. Create bands around both sleeve cuffs and both shoulders.  To create the cuff bands, simply draw a parallel line to the inside of each sleeve line. To create a shoulder band, draw two parallel lines that extend from one bottom corner of the helmet down to the armpit of the same side. Repeat on both sides. Note that the shoulder bands are actually the bands of the backpack. At minimum, you should draw one panel on the center of the astronaut's torso. You may also draw a second panel on the upper portion of one arm. The panels do not need to be complex. Simply draw a square or rectangle in the appropriate spot, then accent the rectangle with smaller rectangles or circles to represent buttons. Since the sun visor of the helmet is usually difficult to see through, you do not need to add a face. You can still do so if you'd like to, though. Gauge the size of the visor in comparison to the rest of the body to determine how large the face should be.  If you have a relatively small visor space to work with, simply draw the eyes and nose of the astronaut.  If you have a large visor space, define the shape of the head inside the visor and add a full face (eyes, nose, mouth, and ears). The sketch itself is done at this point, but you can make it more vibrant by adding color. Use any coloring medium you feel comfortable with. Have fun with this part of the drawing, but keep in mind a few points:  Most suits are light and plain colored, so opt for a white, light blue, or light gray when coloring the body of the suit. The visor should be dark. If you did not draw a face, consider using dark blue or black. If you did draw a face, tint the visor glass with a light blue that's slightly darker than the shade of the overall suit. Most of the equipment will be plain in color, as well (blacks and grays), but you can add a small splash of brighter color to the control panel buttons and sleeve cuffs. Assess the drawing and determine if there are any more changes you'd like to make or details you'd like to add. If everything looks the way you'd like it to look, the drawing is now finished.


Problem: Write an article based on this summary: Follow package instructions carefully. Brush with a whitening toothpaste. Consider a toothpaste with baking soda. Be cautious about natural tooth-whitening treatments.

Answer:
Each whitening product works slightly differently. Some have to be removed after just a few minutes. Others can be left overnight. Read instructions on the package carefully to make sure that you receive the maximum benefit without causing harm to your teeth or mouth. It is essential that you do not leave products on for longer than the recommended time.  Avoid acidic foods and drinks after use. These can hurt the effectiveness of the whitening product as well as irritate your sensitive teeth.  Repeat whitening treatments as necessary. Don't whiten your teeth too often: simply use top ups as needed every six months or so. Whitening toothpastes are a gentler, slower way to whiten teeth. They will not work as quickly or effectively as other whitening methods, though they can be a great way to preserve your desired shade of teeth once you've achieved it in other ways. Whitening toothpastes do not have bleaching agents, but rather use polishing and other chemical reactions in order to remove surface stains. Look for a whitening toothpaste that has been approved by the American Dental Association or other professional dental group in order to ensure that the product is safe and effective. Some studies show that toothpastes with baking soda might be more effective at cleaning teeth than other toothpastes. Baking soda has also long been used as a natural tooth-whitening agent; however, baking soda can also irritate your delicate skin around your mouth. A toothpaste with baking soda should have concentrations low enough that you will receive some benefit from the baking soda without experiencing irritation. There isn't solid data about the usefulness or safety of natural tooth-whitening treatments; however, some individuals report positive effects from their use. Be wary when using these treatments, and it is a good idea to talk to your dentist first. These natural treatments include the following:  Applying mashed strawberries to your teeth. Strawberries have an enzyme, malic acid, that supposedly brightens teeth. Mash fresh strawberries and apply them to your teeth. Let them sit for five minutes and then rinse.  Using lemon juice and baking soda. Shake a small amount of baking soda onto a thick fresh lemon wedge. Bite into this wedge and let it sit for a few minutes, until the fizzing subsides.  Note that strawberries and lemons both contain citric acid, which can cause your teeth to become weaker and predisposed to developing sensitivity. Use natural tooth whitening treatments with caution, and be suspicious of their claims.