INPUT ARTICLE: Article: Rocky ground can lead to pain if your horse does not have shoes. It is likely to bruise the sole of an unshod hoof. A shoe elevates the hoof slightly and decreases the impact of uneven ground on the underside of the hoof. Shoes can also help horses grip and confidently navigate uneven surfaces. Roadwork can wear down hooves without shoes, as it's very abrasive and wears the hoof down faster than it grows. This results in the horse walking on its sole and the bulbs of its heel, which is very painful. If your horse works on the road frequently, it should most likely be shod. Unshod hooves are best equipped to deal with the natural landscape such as pasture, soil, or grassland. There are many other surfaces horses are expected to work on which do not provide good grip. Shoes will give your horse the grip he needs. An example of conditions when your horse may need more grip is when it is walking on icy ground or pavement. Shoes can come in very handy when there are demands for extreme agility placed on your horse. This includes having your horse do a lot of twisting, turning, or jumping. In these circumstances shoes are advisable. Additionally, studs or cork can be inserted into the shoes to prevent the horse from slipping.

SUMMARY: Put shoes on a horse that will be walking on rocky ground. Have shoes on a horse that is doing roadwork. Use shoes to give your horse extra grip. Make agile movements easier by using shoes.

In one sentence, describe what the following article is about: Get a good, current book on the programming language you want to learn. Reviews on Amazon or similar sites will usually help you identify helpful books from unhelpful ones. An interpreter is just another computer program but it will convert ideas you've written in a programming language into "machine code" so you can see things work. Lots of programs are available and you will need to choose one that is appropriate for you. Start with simple things, like a program to convert currencies, and work your way up to more complex things as you continue reading and learning about your programming language. Once you start actively programming in your first language, you may want to learn a second one.  You'll get the most out of learning a second programming language if you pick one that uses a radically different paradigm than the one you started with.  For instance, if you started in Scheme, you might try learning C or Java next.  If you started in Java, you could learn Perl or Python. To be a good programmer, you, at the very least, have to keep up with changing technology.  It's a constant learning process, and you should always be learning new languages, new paradigms, and most importantly: programming new things! Being a successful programmer means learning to think like one. You'll need to look at challenges as learning opportunities, desire to improve your skills and be open to new ways of improving your programming process.
Summary: Start with a good book or tutorial on programming. Get an interpreter for that language. Try putting together your ideas to form a working program. Learn another language. Continue programming and trying new things!

If you work as a cashier or with a cash register, you should always state the purchase price aloud to the customer and then state the amount of money that they handed you. Let's say the purchase price is $5.22, and the buyer hands you a ten-dollar bill. You would say, $5.22 out of $10. This will help both you and the customer remember the purchase price and amount of money given. You can then begin to calculate the amount of change in your mind. You should never put the cash directly into the till in case you forget the exact amount they gave you. Instead, keep the money on the counter so that you can see the exact amount of money given as well as the total price. These are the two numbers you will need in order to calculate the amount of change owed to the customer. By keeping the cash visible, you can refer back to it if necessary. For example, the customer may think they gave you a $20 instead of a $10. By keeping the amount they paid out of the till until the end of the transaction, you can avoid this sort of confusion. If you are working with a cash register, then you can usually rely on the cash register to do the calculations for you. For example, if the cost of an item is $5.23 and the customer pays $10, you should enter the amount paid as $10 and the cash register will provide the amount that you owe the customer. In this case, the customer is owed $4.77. Count out $4.77 from the till, beginning with bills and moving to coins.  Make sure that you familiarize yourself with the cash register that you are using so that you know how to properly cash out a customer. If you ever run into any errors while using a cash register, ask your manager or a colleague for help. If you do not have a cash register, or it is broken, or you entered an item incorrectly, you can always count out change using mental math. This is an excellent skill to have and is essential if you are working as a cashier. A good method is to count out change from the purchase price and stop when you get to the amount paid. Begin with the smallest coins and work your way up. For example, if the the price of an item is $12.48 and the customer gave $20, here is how to count out the change:  Count out the pennies starting at $12.48: $12.49...$12.50 (2 pennies) Count out quarters starting at $12.50: $12.75...$13.00 (2 quarters) Count out dollar bills starting at $13.00: $14.00...$15.00 (2 dollars) Count out five dollar bills starting at $15.00: $20.00 (1 five dollar bill) Total change owed is $7.52 Once you have determined the correct amount of change, you should count the change aloud as you give it to the customer. This way, they will know that you are giving them the correct amount of change. This can be done in the exact same way as the above step, but this time, you are saying it out loud as you hand it to the customer. For example, if the price of an item was $10.25 and the customer gave $20.00, give them the change while counting out loud. Hand them 3 quarters and say $11.00, 4 dollar bills and say $15.00, and 1 five dollar bill and say $20.00. This way they can see that you have provided them with the correct amount of change.
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One-sentence summary -- State aloud the purchase price. Place the money on the register or counter. Count out change based on what the cash register has calculated. Determine change using mental math. Count change aloud to the customer.

INPUT ARTICLE: Article: For complex editing and manipulation of PDF files, you will need to purchase Adobe Acrobat. If you just want to be able to open or export existing files as PDF files, then there are free options.  Acrobat Reader, Foxit Reader, or Windows Reader App are a few free options for viewing .pdf files. You can create a document in a word processor like Word, or Google Docs and save it as .pdf file, but further manipulation of that PDF will not be possible without Acrobat. Open Adobe Acrobat and press Tools > Create PDF. This is where you start when importing files to turn into a PDF or starting a new PDF from scratch.  There are a number of import options to choose from, including importing a single or multiple files, a scanned file, a webpage, or the contents of your clipboard. Adobe limits its file support to Microsoft Office (2007 and later) or OpenOffice filetypes, as well as basic text (.txt, .rtf), image files, or other adobe products.  Selecting a file will create a PDF copy of that file in the same location on your computer as the original file. With the file now opened, press “Edit PDF” and select a highlighted box of text. You can either type out the changes you want or utilize the options in the Format section. Press “Edit PDF” and select any highlighted image. Use the options in the Objects section to manipulate the image.

SUMMARY:
Determine how you will be using PDF files. Create a PDF file from an existing file. Edit text in the imported file. Edit images in the imported file.