Check the zippers on your backpack to see if they have a hole where you can place a lock. Don't put a lock through the tags on your zippers since they can easily be broken off. If you plan on traveling with your backpack through busy areas, invest in locks so no one can steal your belongings. If you're taking your bag through an airport, make sure you use a lock that's TSA-approved. Backpacks that have a basic color, such as black or brown, are easier for thieves to steal since they don't have any distinguishing features. Look for backpacks that have reflective strips or bright colors so you can identify it as your own and stay safe while you travel. If your bag doesn't have any built-in colors, use ribbons or neon duct tape on parts of your bag so you can see it from a distance. Keep in mind how you're primarily using the backpack to determine what sort of storage you need. For example, you may want separate sections for dirty and clean clothes or a laptop sleeve to hold protect your valuables. Compressions straps are buckles used to hold your materials tightly so they don't take up as much space. When you pack your bag, use the compression straps to hold down soft items, such as clothes. Tighten the straps to condense your things so you can put more on top. If your bag doesn't have compression straps, then you can also buy compression cubes to put in your bag instead. Some larger travel backpacks have smaller packs attached that you can remove. That way, you don't need to carry all of your belongings everywhere you go. Instead, you can leave your larger bag where you're staying and travel light during the day. Not every travel backpack will have a removable day pack.
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One-sentence summary -- Look for backpacks with lockable zippers to keep your belongings safe. Use a bag that has an eye-catching color so you can recognize it. Check for useful pockets and compartments inside your bag. Try a bag with compression straps to pack more items. Get a removable day pack if you don't want to carry your large bag everywhere.

Q: Place the skillet over medium heat. It will take around 2-3 minutes for the butter to melt. If desired, you can use 2 tbsp (30 g) of butter and 0.125c (30ml) of olive oil. Carefully place the frozen pierogies in the pan one at a time so they don't cause the melted butter to splatter. You'll get about 12 pierogies in a standard 16oz (450g) package of frozen pierogies. If you are using uncooked frozen pierogies, you should boil them on the stove (until they float) or in the microwave (for 5 minutes), then pat them dry before adding them to the skillet. Put the lid back on the skillet and let everything cook for another 2 minutes. Then take the lid off, flip the pierogies over, and stir the veggies once more. Keep uncovering the skillet, flipping the pierogies, and stirring the onions and mushrooms until everything is browned to your liking. It will likely take 14-16 minutes total for the pierogies to heat through and become nicely browned on the outside. If the pierogies have browned in 12 minutes or less, turn down the heat to medium-low and cook them for a total of at least 14 minutes. Press down on a pierogi to make sure they are soft and heated through in the middle. Once they're nicely browned, the pierogies are ready to serve and enjoy!
A: Melt 4 tbsp (60 g) of butter in a large skillet. Add 12 frozen, pre-cooked pierogies to the pan. Cook the pierogies for 2 more minutes in the covered skillet. Cover the skillet and keep checking the pierogies every minute.

Article: Most digital metronomes will use BPM or beats per minute as a way to measure the speed of the piece. Some mobile metronomes available for phones will even allow you to tap the beat on your screen to get the corresponding tempo. On most quartz metronomes, the BPM is listed around the edge of the dial. Within the BPM selections, there are corresponding Italian words that are traditionally used to describe tempo, such as Allegro and Presto. On wind-up models, you simply slide the weight up the metal bar to the desired tempo or the marking indicated on the music to be rehearsed. Many digital metronomes will allow you to set the time signature, but most wind-up metronomes do not. Time signatures consist of 2 numbers written how you would write a mathematical fraction. The top number indicates the number of beats in a measure. The bottom number indicates the value of the beat. For example, a piece in 4/4 time would have 4 quarter notes in a measure, while a piece in 2/4 time would have 2 quarter notes in a measure. Some pieces of music may have several time signatures. To practice them with a metronome you will have to take it in parts and reset the metronome to match the changing time signatures. Setting the volume for the metronome is especially important for any digital devices. You want to find a volume that won't be drowned out by the music but isn't overwhelming either. Many swinging or wind-up metronomes will not have a volume control, but musicians can follow the swinging of the metronome to keep accurate time even if they are unable to hear the metronome over the music. Some electronic metronomes will also have an LED light that goes on and off in time with the beat.
Question: What is a summary of what this article is about?
Set the tempo. Set the time signature. Set the volume.

Article: The consular official should tell you what you need to bring in advance of your interview. For example, you will probably need the following: confirmation page to Form DS-160 receipt for payment of the application fee passport photographs if you couldn't upload the picture evidence you intend to return home after your trip (some applicants) evidence of your ability to pay for the trip, such as bank statements (some applicants) When you arrive at the consulate or embassy, show your appointment letter to the guards. An embassy or consular official will check to make sure everything is in order. You will then talk to a different official, who may ask you questions about your job, education, and your plans while you are in the U.S. Answer all questions honestly. The interviewer wants to see that you have sufficiently strong ties to your home country so that you won't try to stay in the U.S. permanently. If you are traveling for medical treatment, you may need to provide a diagnosis from your doctor and an explanation of the treatment you are seeking. In some countries, you must pay an additional issuance fee. You can check how much you will pay ahead of time by contacting your embassy or consulate. You can also check the State Department website and enter your country. Digital, ink-free fingerprints will probably be taken during your interview. However, each consulate or embassy is different, so you may give them at a different time. If you are approved, then arrange for the delivery of your visa. For example, you can usually pay at the consulate for a courier to deliver the visa to you. The average processing times will differ depending on the embassy and your personal situation, but 3-5 business days is typical.
Question: What is a summary of what this article is about?
Gather documents. Answer questions. Pay an issuance fee. Give fingerprints. Receive your visa.