Vinegar contains the acetic acid, which is an effective solvent that can dissolve oil and many other compounds. Using a rough paper towel will help exfoliate the skin,and remove layers of dead skin cells that are stained by the ink.
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One-sentence summary -- Spray or wet the area with white vinegar, then use a paper towel to rub away the ink.

Q: Your Mac OS X and other software updates can keep your system stable and running smoothly. Updates should install automatically, but it's good to check every once in a while and see if an essential update is queued. Open the Mac App Store and click the Updates tab at the top of the window. Review and install any available updates for your system and installed programs. If you're running low on free space, your Mac's performance may take a hit. Clearing out old files and programs can go a long way towards improving your Mac's responsiveness. Uninstall old programs by dragging them from the Applications folder to the Trash. Check your Downloads and Documents folders to see if there are any old files that you can delete. Programs like CleanMyMac3, Disk Inventory X, and DaisyDisk can find and remove tons of old junk files from your computer. You can free up a significant amount of space using a file removal tool. Use Monolingual to remove unused language files. You can get it for free from monolingual.sourceforge.net/. Don't remove the language you use or the English language, as this can cause problems with the operating system. If your desktop is chock full of icons, this could be slowing down your system. Pare down your icons and files on your desktop to help improve performance. Some programs will set themselves to start as your Mac boots up. This makes it slightly easier to load the program when you need it, but too many will make your Mac take forever to start. Click the Apple menu and select "System Preferences." Select the "Users & Groups" option then select "Login Items." Select an app that you want to prevent from loading at startup and click the "-" button. You may need to click the padlock and enter your admin password first. Sometimes files and permissions get corrupted, which can cause problems with your Mac. The included Disk Utility can scan for and fix these types of problems. Launch Disk Utility from the Utilities folder in the Applications folder. Select your hard drive in the left frame. Click the "First Aid" tab and then click "Verify Disk." The scan will begin, which may take a while to complete. Click the "Repair Disk" button if the scan reports any errors.
A: Install the latest available updates. Free up space on your hard drive. Remove excess icons from your desktop. Clean up your startup sequence. Check your hard disk with Disk Utility.

Article: Right click the Auto Shape and select "Add text" from the pull-down menu. A cursor will appear in the center of the object. Type the desired text and click enter. To change the text formatting, select the text and choose from the available text formatting options on the Home tab. Choose a pre-formatted style from the Styles menu; change the alignment, spacing or indentation from the paragraph menu; and adjust the font, color, size or effects from the Font menu, located in the Home formatting toolbar. Text has been added to the Auto Shape.
Question: What is a summary of what this article is about?
Add text to the object.