In one sentence, describe what the following article is about: Coin and button batteries are small, flat, and round. Coin batteries are flatter, while button batteries usually have a smaller circumference. The top of the battery is usually etched with the battery size.  Usually only the positive side of the battery is etched. The negative side might not have any markings at all. In some button-style batteries, the positive side is slightly raised. Your battery compartment may be marked with a positive symbol, especially if there is a door or a slide-out mechanism where you should put the battery. However, if you had to pry off a cover, there may not be a marking indicating which direction the battery should go. In the case of devices with a battery door, such as a hearing aid, you may find it difficult to close the compartment if you put the battery in backward. If you don’t see any markings on your device, you should assume that the positive side of the battery should be face-up.  If you’re installing a coin cell battery on a computer’s motherboard, for instance, there may not be any markings to indicate which way the battery should go, but the positive side should face upward. If you’re still not sure, consult the device’s user manual.
Summary: Examine the face of the battery for a + symbol. Check the device for a positive symbol. Insert the battery with the positive side facing up unless directed otherwise.

In one sentence, describe what the following article is about: Dampen a cotton ball with rubbing alcohol. Then, dab the dye stain with the cotton ball. Discard the cotton ball if any dye rubs off on it. Afterward, use another damp cotton ball to remove any dye that remains. If dabbing the stain doesn’t work, dampen a clean cloth with alcohol and wipe it back and forth on the dye stain. As the dye comes off onto the cloth, use a new piece of cloth to wipe your shoe with. After you’ve removed as much of the stain as you can, start to pat your shoe dry. Pat your shoe until it is almost dry. This is important, as some dye may continue to come off as you dry your shoe.
Summary: Dab the dye stain with a cotton ball dampened with alcohol. Dampen a cloth and wipe the dye stain. Pat your shoe with a clean cloth.

In one sentence, describe what the following article is about: A hernia can affect different areas of your body in different ways, although a hernia in or around the stomach area may be the most common type of hernia. These hernias include:   Hiatal hernia affects the upper part of your stomach. The hiatus is an opening in the diaphragm that separates the chest area from the abdomen. There are two types of hiatal hernia: sliding or paraesophageal. Hiatal hernias occur in people of both sexes, and are typically more common in people over the age of 50 and those who are obese.   Epigastric hernia occurs when small layers of fat push through the belly wall between your breast bone and your navel. You can have more than one of these at a time. Although epigastric hernias often present no symptoms, it may need to be treated with surgery.  Incisional hernia happens when improper care after abdominal surgery results in bulging through the surgical scar. Often, mesh lining is incorrectly installed and the intestines slip out of the mesh, causing a hernia.  Umbilical hernia are especially common among infants. When the baby cries, a lump around the belly button area usually protrudes. Hernias can also affect the groin, pelvis, or thighs when the intestines break out of their lining, causing uncomfortable and sometimes painful lumps in these areas.   Inguinal hernia affects your groin area, and happens when a portion of the small intestine bulges through the abdominal lining. Surgery is sometimes necessary for inguinal hernias, as complications can cause life-threatening situations.  Femoral hernia affects the upper thigh, right below the groin. Although it may present no pain, it looks like a bulge in your upper thigh. Femoral hernias are more common in women than in men.  Anal hernia, or rectal prolapse, may cause the entire rectum to extend out of the anus, or may only push a part through. Anal hernias are rare and can affect anyone, but are more likely to be seen in older adults with a history of constipation or weak pelvic floors. They are often confused with hemorrhoids, but they are not the same thing.
Summary:
Check for hernias that occur around the stomach, abdomen, or chest. Know the types of hernias that affect the groin area.