Article: Avoid shelving books too tightly or leaning against one another as this can cause lasting warping, structural damage, and cracking. When shelving, place books of similar height and length next to one another to avoid stressing the spine. Placing a book flat is an alternative to upright shelving. However, when shelving a book horizontally be sure to put as little weight on top of it as possible. Grab the middle of the spine when removing a book from a shelf to avoid damaging the head (top) and foot (bottom) of the spine. Place your books in a controlled climate to help prolong the book's quality. Sunlight, heat, and humidity can all have negative effects on the book's binding, structure, and page quality. Humidity can cause mildew to grow on your books. If you live in a particularly humid environment, and mildew begins to grow, simply wipe the mildew with a very dry cloth and leave the book in sunlight for 30-45 minutes. Be careful not to leave it longer as sunlight can cause the cover to fade. If a rare or fragile book grows mildew bring it to a specialist in book conservation. Clean your books regularly in order to prevent natural wear and tear and increase the quality of their storage. Dusting your books will help reduce permanent page and cover aging. Make sure to dust your books from the spine outward so dust does not settle behind the spine. Avoid storing books in plastic bags. Books need to breathe and plastic can cause molding or warping. Instead, try wrapping the book in acid-free cloth or purchases a book storage box.
Question: What is a summary of what this article is about?
Shelve books upright. Keep books out of direct sunlight and in a cool area. Keep your books clean.

Problem: Article: Store the unused potting mix in an old garbage can or other container with a lid. Choose a sheltered spot for storage. You don't want your potting mix to be exposed to rain before it's in your garden, so choose a spot that is under cover. Similarly, your potting mix should not be directly exposed to sun, especially in hot weather. A garden shed is a good storage place. The pH measures the acidity and alkaline levels of the soil. Meters that measure the soil's pH levels are available for purchase online for $20 or more. Let the mixture mature for a week to give all the ingredients a chance to blend together before testing the pH. Place the pH meter in your soil to test its pH. If the soil is too high in either acid or alkaline, nutrients may not be absorbed into plants as easily. An ideal pH level for most plants will be between 5.5 and 7.0 To raise the pH levels, or to make it more alkaline, add some lime. To lower the pH, or to make it more acidic, add more sulphur. Make small batches of soil to test different mixtures and proportions. This will help you get a feel for how different ingredients produce different pH levels. A bioassay is a test to check the viability of a biological specimen. Basically, this means that you're going to use the soil to start seeds and monitor how they grow. Try growing oats, beans, or lettuce from seed. Monitor how quickly the seeds germinate and how the seedlings grow. If the majority of seeds do not germinate or the seedlings grow slowly, your potting mix might be poor. Try a different recipe for your potting mix. Search online for "potting mix recipe" to find another option. Remember to skip the fertilizer in your mix if you're going to be using it to start seeds.
Summary: Store your potting mix. Test your soil with a pH meter. Test your soil with a bioassay.

INPUT ARTICLE: Article: To stretch out your abs, complete the "Superman" pose. Lie on your stomach and reach your arms forward and your legs backward while lifting them slightly off the ground. You can also try child's pose to stretch out. This consists of sitting on your heels, bringing your stomach to your thighs, and stretching your arms out in front of you. Perform the same number of sequences each time until you feel ready to add additional sequences. To start feeling results, aim to do at least three sequences three days a week. For faster results, increase the number of times per week you do this exercise. Traditional Pilates involves working through a sequence of moves, and the goal is to perform each move one time correctly, concisely, and with control. One great way to improve your form and to learn other complementary exercises is to attend a class or take lessons. With time and practice, you can learn how to perform the corkscrew properly using the method of Joseph Pilates. Concentrate on perfecting your technique rather than doing numerous repetitions.

SUMMARY: Stretch out upon completion. Repeat exercise three times a week. Consider taking Pilates classes.

This is on the top of the camera, towards the left if the back of the camera is facing towards you. The flat end of the canister will be pointing upwards. You may find you have to rotate it a little in one direction for the fork attached to it to fully enter the film canister. This is normal. Ensure that the film properly engages the sprockets as marked in the picture. The shutter might not fire the first time if it's not armed already, of course, in which case just wind the camera on. Don't fire the shutter once the frame counter reads 1; this is the first frame on your roll. The film speed dial is in the same place as the shutter speed dial; it's the silver dial around the outside, which can move independently.To change the film speed, pull the silver ring around the shutter speed dial upwards. While holding it there, rotate the dial until you have set your desired film speed.Notice that the MTL3 has both DIN and ASA settings; modern films typically give their ratings in ASA (which is called ISO on digital cameras). (For example, Fuji Velvia 50 is ASA 50, not 50 DIN, the latter being equivalent to an ASA speed in the high five figures.
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Lift the rewind knob. Pull it a little further and the back of the camera will spring open. Drop a 35mm film canister into the chamber on the left hand side. Push the rewind knob all the way down. Pull the film leader away from the canister till the tip is at the green index mark on the right hand side, next to the take-up spool. Close the back of the camera. Press the shutter button, then wind on your film. Repeat the above step until the frame counter reads 1, as pictured. Set the film speed on the film speed dial.