Article: Unfold the shirt, turn it inside-out and lay it on the table. Make sure that the front side is facing you. Then use a seam ripper to remove the stitches securing the front side of the collar to the shirt.  If you don't have a seam ripper, you can use a sharp pair of scissors to carefully cut it away. Stop at the shoulder seams. Unless you don't plan to re-attach it to your new neck-line, leave the collar attached to the back of the shirt. Make sure the connected collar is folded back, away from where you will cut. Doing so ensures the smoothest and straightest cuts and helps you avoid mistakes. Starting on one side of the V, use a pair of sharp scissors and cut along the marked line. Stop when you reach the bottom. Repeat this process on the other side. Be careful to only cut through the front side of the shirt. If you didn't plan on creating a hemmed collar, your new shirt is done.
Question: What is a summary of what this article is about?
Remove the stitches. Smooth the crew-neck shirt out on the table. Cut out the V-neck.

Problem: Article: Keeping your goals in mind and being conscientious of time constraints, follow the steps you outlined in your plan. Stick to your plan and try not to deviate without careful consideration. You spent a lot of time thinking about your goals and the future of your work, so remain confident in your plan.  Communicate your plan with your colleagues. Communication is crucial for any successful business strategy. Make sure your fellow coworkers are aware of your plans and goals so that they can be working with these things in mind as well.  If possible, try to involve your colleagues in the planning stage so that they feel more engaged and personally invested in your company’s goals. Strategic work involves setting priorities so as to most efficiently accomplish tasks. Those priorities may shift regularly, due to a number of outside circumstances, and you need to be able to identify the shift so as to reallocate your resources accordingly. Consider the plan you originally laid out and how well you are meeting those goals. If you find that you are not meeting your goals as well as you feel like you should, be open to the idea of tailoring your plan to whatever your current situation is. Determine if your goals are realistic to the time frame you have outlined. You may find that your plan is not resulting in timely results, or that you are accomplishing steps faster than you had expected. Either way, you should reframe your goals and/or plan so they are in line with reality. For example, if you unexpectedly find a fleet of trucks at a record-low clearance price, then it may be a good idea to make that purchase before investing in the previously high-priority piece of business property that will most likely stay on the market.
Summary: Put your plan into action. Evaluate your progress. Make necessary adjustments.

INPUT ARTICLE: Article: You shouldn't have to replace the flint of stuck flint wheels. Normal flints mechanisms have three parts: a spring, a flint, and the flint wheel. When new, these parts can stick, preventing sparks needed to ignite the flame. To resolve this issue:  Open the lighter. Remove the insert from the lighter case by pulling on the insert by the flame guard, which is the raised part of the insert with holes in it. Remove the flat head slotted screw fastening the flint spring at the bottom of the insert by turning it counterclockwise with a screwdriver. Pull out the screw and attached flint spring. Tap the top of the lighter to knock the flint loose. Replace the flint, spring, and refasten the screw. Your flint wheel should be unstuck. Pull the lighter insert from its case. Turn the insert upside down. You should see the brass screw fastening the flint spring. Unfasten this with a screwdriver or the case of the lighter. While keeping the bottom of the insert oriented upward, pull out the unfastened screw and attached flint spring. Tap the insert gently into your palm to knock loose the flint so it falls into your hand. The flint will look like a very small cylinder roughly the size of the flint spring tip. Old flints can be thrown away. While holding the insert so its bottom is still facing upwards, drop the new flint down into the flint hole. Reinsert the spring into the hole and refasten the screw. Replace the insert back into the case. Make sure the case is seated correctly by closing the case. When the insert is correctly positioned, light the lighter as you would normally. If, after replacing the flint, your lighter still doesn't work, it might be out of fuel. Check and refill fuel as necessary.

SUMMARY: Unstick stiff flint wheels. Unfasten the flint screw at the bottom of the insert to replace the flint. Remove the flint. Replace the flint and reassemble the flint mechanism. Test the new flint.

In one sentence, describe what the following article is about: After you pour the vinegar along the tiled edges, allow the vinegar to soak into the grout. Letting the vinegar sit for 10 minutes will help loosen debris and stains.
Summary: Let the vinegar sit for 10 minutes.

The name, address and phone number of the business you are invoicing should appear on the left side of the invoice, below the header.  If you are invoicing a person, rather than a business, include that person's name and the address and phone number you have on file for that person. If you don't have an address and phone number for the business or person you are invoicing, include an email address instead. On the right side of the page, across from the recipient's contact information, include the details of your invoice. Write the following information on separate lines on the right side of the page:  The invoice number. Type INVOICE: followed by the number. Since you are the one sending the invoice, you may choose the numbering system that works best for you. You can number your invoices numerically (1, 2, 3, 4) or by date (for example, 2010-10-16, for the year, month and day of the invoice). If you choose the latter, you can add "-01" to the end to differentiate between invoices sent on the same day. In any case, make sure you number your invoices in sequential order so you don't confuse yourself. The invoice date. Even if you choose to number your invoice by date, you should clearly write the date on a separate line. The invoice due date. If you have an agreement with the business you are invoicing about when you can expect to get paid, write that date as the due date. If you don't have an agreement, figure out the standard pay-by period in your industry; in most cases, it's 30 to 45 days. Under the invoice information, note whether you will take cash, checks, credit cards, PayPal or some other form of payment.  If you charge a late fee, quickly outline this as well, if you haven't outlined it somewhere else already, like in a contract. Include your tax identification number, if applicable. Laws vary by municipality, so be sure you know your local tax code if you are to collect sales tax or some other usage tax, like the hotel tax.
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One-sentence summary --
Write the recipient's contact information. Write the invoice number and other invoice information. Specify your payment terms.