INPUT ARTICLE: Article: It should be the 1/2 mortar marker that joins your 1st and 2nd rows. For the second row it should already be in place, but you need to remember to move the line each time you move up a row so that you know the height you have to hit. You can also use a bolster, which may make a cleaner cut. Still, bricks are meant to break cleanly. Tap on the point you want to cut the brick with the back of a hammer until you see a crack, then hit this spot hard, once, to cut the brick in half. You need to stagger your bricks, meaning that one brick in the second row sits on two bricks in the row below it. To do this, you'll start every other new row with half a brick. You don't need a perfectly clean, smooth cut. The rough edges will help hold the mortar. You do not want to make the next row right on top of the first one, so that the joints line up. Mortar and place the half brick, then place a full brick next it like normal. Do this on both ends of the wall, so that each side has a half brick and a full brick in place. To help you stay level, you build the ends of the wall up a course higher than you're working on, making it appear like there are staircases on the ends of the wall. You then fill in the bottom row, build the sides up a little higher, then continue until you reach the top. Remember to use the guideline and your level together to make sure the bricks are even and at the right height. Your gauging rods should help you place the end bricks, as they will line up right with the marks planted at the end of your wall. Place roughly 1/2" of mortar down, press the brick into place, check the straightness with the guideline and level, and wipe up any excess mortar. Then repeat until the second row is done. You want to have the ends of your wall one course higher than the row you are currently working on. This is especially important if the wall has pillars on either end. With each row, the process is the same. However, remember to use half-bricks every other row to ensure that the joints in each row are not perfectly lined up. Move the guideline. Apply mortar. Press a brick into either end of the wall, using the guidelines and level to make sure they are at the right height. Do the same thing one row above the one you're currently working on. Measure, mortar, and build the bottommost row, (infill the courses). Repeat the process one row higher.

SUMMARY: Move your guideline up to the next marker. Cut a brick in half with a firm tap from the pointed end of a hammer. Start the second row with 1/2 a brick on both ends. Mortar and place one full brick on top of your ends. Fill in the entire bottom row. Continue building your wall from the ends inward.

In one sentence, describe what the following article is about: Click the Home tab in the upper-left side of Twitter to do so. Scroll down through the Home feed until you find a tweet you want to add to your profile. It's a rectangle made of two arrows below the tweet. A pop-up menu will appear. If you want to add your own take the the tweet, click the "Add a comment..." text box above the tweet, then type in th comment before proceeding. It's below the original tweet in the pop-up menu. Doing so posts the tweet to your profile page.
Summary: Open the Home feed. Find a post you want to retweet. Click the "Retweet" icon. Add a comment if you like. Click Retweet.

Gripping a water balloon too tightly can cause it to pop in your hand but a loose grip could hurt your throwing accuracy. Keep in mind that the water will shift around in the balloon. If you're having difficulty handling the balloon, it may help to hold your hand underneath the balloon and throw it overhand in a catapult motion. If they aren't looking at you, they won't be able to react and will be an easy target. Look for people throwing balloons at others so they aren't paying attention to you. Fake throws will throw off your opponents and cause them to duck or dodge the throw too early. You can then hit them more easily immediately after they've moved. Too many fake throws could cause the opponents to get annoyed and target you. Use your fakes judiciously. Aim for your target's body just above the stomach. This spot will give you the widest margin of error if your throw isn't perfect.
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One-sentence summary -- Perfect your grip. Aim for unexpected targets. Fake a few throws. Aim for the center of your target.

INPUT ARTICLE: Article: Peak flow meters only work properly if air is able to freely pass through them. Blowing into a meter that is obstructed by a foreign object will not provide an accurate reading and could cause unnecessary strain on your lungs. Peak flow meters usually have an open orifice in the mouthpiece of the device; this is the area most likely to become obstructed, so check here first before use. When grasping the meter in your hand, make sure your fingers do not obstruct the sliding scale on top of the device. It is important to maintain good posture while using your peak flow meter because this will allow you to maximize your pre-test inhalation as well as your exhalation (which is measured by the device). Slouching or lying down while using the meter will not allow you to get a good reading. The sliding cursor on the back of the peak flow meter is what measures the force of your exhalation. If you do not zero the cursor before you use the meter, your reading will not be accurate. You can adjust the cursor by simply placing your finger on it and manually sliding it to the "zero" end of the scale, which is toward the mouthpiece of the meter. In order to register the most powerful exhalation you are capable of, you must first fill your lungs with air. Do this before inserting the peak flow meter into your mouth in order to ensure the fullest inward breath possible. Be sure to remove gum or anything else from your mouth before inhaling. Not only do you want to prevent blowing a foreign object into your peak flow meter, but you also don't want to accidentally inhale anything when you take your deep breath in. In order to get the best reading possible on the meter, you should place the mouthpiece between your front teeth and seal your lips around the opening. This will stabilize the meter and ensure that no air escapes from the sides of your mouth when you exhale. Pull your tongue backward, away from the mouthpiece, so you do not accidentally block the opening of the meter. The idea here is to get a hard, fast burst of air out of your lungs to push the sliding cursor on the meter as far as possible down the length of the device. This means that your initial burst of breath is the most important for getting a good reading. Don't worry about blowing for a long time or getting all the air out of your lungs when you exhale; only your most forceful rate of exhalation will register on the meter. If you cough or sneeze into the device, you will have to do it over again, as these will give you false readings that are higher than your actual peak exhalation. Don't forget to write down the meter reading! Each time you take a reading using your peak flow meter, you should do the test three times in order to eliminate the possibility that your reading was affected by user or device error. The highest of the three readings is the one you should keep for your records. This is also why it is important to write down each of your test readings as you go. Do not average your readings; you need to keep a record of your peak flow rate, which means you need to get the highest reading possible. If you don't have enough energy or are out of breath after the first test, make a note of this for your records and stick with your first test reading.

SUMMARY:
Check the meter for obstructions. Stand or sit up straight. Set the cursor to zero. Inhale deeply. Place the mouthpiece in your mouth. Blow forcefully into the meter. Repeat the test twice more.