In one sentence, describe what the following article is about: If you choose to use photographic paper, you can load it into your camera under specific lighting conditions. For photographic paper, you have to load it either under a safelight, or a flashlight filtered through at least three layers of red cellophane attached to the lighted end. The flashlight must be six to eight feet away, so hanging it from a ceiling and working underneath it is a good way to accomplish this distance. Unlike photographic paper, film must be loaded under completely dark conditions. Practice loading your camera with a simple piece of paper in lighted conditions, and then with your eyes closed to get the feel of loading the film before you attempt to do so in complete darkness. You will have to cut the film down into smaller frames. The size of the frame will depend on the overall size of your camera's body. For most moderately-sized cans, you can use a strip of film cut into 2 3/8 to 3 1/2-inch pieces. For a camera made from a one-gallon paint can, cut a 4 by 5-inch piece of film. A camera made from a 2-pound coffee can will take a 2 1/4 by 3 1/4-inch piece of film. These measurements apply to the use of photographic paper as well. Use sheet film if possible, which is easier to manipulate as it is completely flat. Make sure to cut down your paper or film in complete darkness. A closet should work fine as long as no cracks allow light to seep through. If you are unsure about the ratio between the size of your film and the size of the camera body, err on the side of cutting too large of a strip of light-sensitive material. You can always trim down the edges of your photo after you develop it.
Summary: Choose photographic paper or film. Determine the size of your light-sensitive material.

On laptops, they are typically located on the sides or on the back panel. For desktop computers, most have front ports, as well as several ports on the back side. The front ports may be hidden by a flap. If you plan to use it frequently, insert it into the front port. Make sure you insert it into the correct port - some desktops and laptops have different types of ports available, such as 2.0 and 3.0 ports, which could be hi-speed and non-hi-speed ports. Proceed accordingly. It should fit snugly. Do not force it in. USB drives insert one way, so if it doesn't fit, try turning it upside down. When you insert the flash drive, Windows will install the drivers for it automatically. You will see notifications about this in the bottom right corner of the desktop. NOTE: If Windows isn't able to identify the device or install the drivers automatically, you may either visit the manufacturers webpage for the appropriate driver (it is often located in the support or download section of the website), or visit the Windows Compatibility Center which lists thousands of devices and links to their respectful webpages. Unless it has been disabled, the Autoplay window will open when you insert your USB drive. It will list several options depending on what is stored on the flash drive. The most common one is "Browse files" If it doesn't, go to Computer or My Computer from the Start menu. This will list the devices attached to your computer. You should see your USB flash drive here. It is often named for the manufacturer of the drive. Double click it to open the drive. This could take several minutes depending on what you are copying. Once the transfer is complete, you can remove your flash drive. To remove the USB Flash Drive safely, locate the "Safely Remove Hardware" icon in the system tray located on the bottom right of the screen, on the taskbar (next to the clock);right-click it and choose the USB Flash Drive from the list of devices. Be careful not to remove the wrong device (your device can carry its own (manufacturer's) name or a generic name that Windows recognises it by. After clicking the USB Flash Drive, Windows shall notify you once the device is safe to remove from the USB port. An alternative method would be to go to Start>Computer, right-click the USB Flash Drive and click "eject" from the menu.
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One-sentence summary -- Find a USB port. Insert the USB drive into the port. Wait for the transfer to complete.

Problem: Article: Leaving doors wide open will result in a loss of heat or cool air, which can increase the need for energy to heat and cool that room. By closing the door to your classroom and other rooms, you can keep the heat and cold inside the room and save energy in the process. If you are a student, check with your teacher before you close any doors. Your teacher might be leaving the door open for a good reason. Try saying something like, "I read that closing doors can help us save energy. Would it be okay if I close our classroom door?" If your classroom or other areas of your school have fans, then using these instead of turning up the air conditioning is a great way to save energy. If it starts to feel a bit stuffy in a classroom, then switch on the fan and see if that takes care of it. If you are a student, try saying, "Before we turn up the air conditioning, could we try using the fans? They can cool the room while using less energy than air conditioning." If you are a teacher, check with your students to see if they are cool enough with just the fans. Setting the heat for 68F (20C) degrees in the colder months and 78F (26C) degrees for cooling in the warmer months can significantly reduce energy costs. Check the thermostat in your classroom to see if these settings have already been applied. If you are a student, try saying to your teacher, "I read that we could save energy by making some minor adjustments to the thermostat in our classroom. Would it be okay if we tried that?" If you are a teacher, try saying to your students, "I am adjusting the thermostat to help us save some energy, but let me know if you start to feel too hot/cold." Drafts indicate that windows, doors, and other areas may not be sealed well, and this can result in wasted energy. If you notice a draft, tell the maintenance staff at your school. If you are a student, you might want to let your teacher know first. However, you could offer to tell the maintenance staff for them. Try saying something like, "I noticed that there is a draft near the windows in our classroom. Is it okay if I tell the maintenance staff, or would you rather let them know yourself?" If there are any shelves, rugs, or other things blocking the vents in your classroom at school, then moving these obstructions can help to save energy. Ask for help moving the obstruction if needed. If you are a student, be sure to check with your teacher first. Try saying something like, "I noticed that the area rug is covering a heating vent, and we could save energy if we moved it slightly. Would it be okay if we did that?"
Summary:
Close the door when you leave or enter a room. Suggest using fans instead of cranking up the air conditioning. Check the thermostats for potential energy saving adjustments. Check for drafts in your classroom. Look for obstructions to vents.