INPUT ARTICLE: Article: The microfiber cloth that may have come with your glasses is ideal for cleaning your lenses, but even this can become dirty over time. Using a cloth that has dust on it will cause your lenses to develop small pits and scratches over time, creating cloudiness. To avoid this, only clean your glasses with a clean, soft cloth. The more dust and grime that is on your lens cleaning cloth, the more damage you will do to your lenses over time. Every time you dry, wipe, or polish your lenses, you will be scraping these particles against your glasses. To keep your lens cloth cleanest, you may want to hold it in a glasses case that you carry with you throughout the day. You might also put this cloth in a plastic baggie or other container and tuck it away in a backpack or satchel. Depending on the cloth your are using, cleaning procedure can vary. A soft cotton piece of fabric can be washed normally, but you should follow the directions that came with your cloth. For cleaning a microfiber cloth, you should:  Separate it with like-fabric items. Add a small amount of liquid detergent to your washing machine. Do not use fabric softener — this remains on the cloth and can leave streaks when using it on lenses. Set your washing machine to cold. Insert your microfiber cloth and like-cloth items into the wash. Air dry or use a dryer on a low/no-heat setting. Over the course of a day your glasses will normally collect dust, dirt, and oil from your face and hands. By cleaning your lenses regularly with glass cleaner or warm water and a drop of dish soap, you can cut down on the overall daily cloudiness you may experience. This will keep dust from settling on the glasses and protect them from harm if they are knocked over. Instead of placing your glasses on your bedside table at night, for instance, place them in their case and then put that on your bedside table. This will also protect your glasses from getting broken or damaged if you knock them over when not in use.

SUMMARY: Use a clean, soft cloth always. Protect your lens cloth from the elements. Wash your lens cleaning cloth. Clean your lenses regularly. Keep your glasses in a case when you're not wearing them.

In one sentence, describe what the following article is about: There are a few tabs at the top of the Steam client, one of them is “Library.” Click it, and a drop-down menu will appear. “Games” is the first item on the menu. If you have any existing games in Steam, it will all be listed on the left panel. On the bottom left-hand corner of the app, click “Add a Games” and select “Activate a Product on Steam” from the menu that appears. A dialog box that will guide you through the process of adding your AoE2HD product code.  The dialog box will prompt you to enter your game's product code. This code is provided to the buyer when purchasing the game and will usually be found on the retail CD/DVD case that came with the game. The code is not of specific length and can contain both alphabets and numbers. Enter the code into the fields and follow the onscreen instructions to complete the process. Note that, because using the code to install the game on your computer and adding the game to Steam are two separate things, it is still possible to use the code on Steam after you've already used it to install the game on your computer.
Summary: Access the Steam Game Library. Select “Games” from the drop-down menu that appears. Add your AoE2HD product code to Steam.

INPUT ARTICLE: Article: You can purchase pre-paid phone cards from local convenience stores, chain pharmacies, and national retailers, like Wal-Mart or Target. The cost of a card ranges from $2 to $30 dollars. While some cards are located on wall and spinning racks near the register, other cards are located behind the register.  Before purchasing the card, ask the clerk which cards they recommend. Alternatively, you can set up an online account with a provider, like Zaptel or Tel3Advantage. By setting up an account, you can choose a phone card from a variety of options and reload your card online. Each card has an 800 number or a local access number, as well as a PIN number. In order to make a call, first dial the access number and enter your PIN. Then, listen for the prompt and input the phone number you are calling.  Make sure to manually dial the full number of the party you are calling, including the international dialing code, country code, and area code.  Most cards are activated at the time of purchase at the register. While some cards have a scratch off coating that conceals the PIN number, other cards will have their PIN numbers located on the receipt. Before purchasing the card, make sure to check the card’s cost per minute, i.e., rate, surcharges, rounding rates, and expiration date. Rates vary depending on which country you call, as well as what kind of phone you use, for example, a cellphone versus a payphone. Furthermore, some cards have disconnect fees, maintenance fees, and surcharges of 35 cents or more. Call the toll-free number on the card to find out about rates and fees if they are not listed.  Some cards employ rounding where they round up in increments, like increments of three. This means that a one minute call is charged for three minutes.  Cards might also have an expiration date of 30 days meaning if you do not use the card, it will not work after that date. Other cards might charge a non-usage fee if you go a certain amount of days without using the card.

SUMMARY:
Purchase a pre-paid phone card. Input the access and PIN number. Check the fine print.