Yes there is. Select the paragraph or sentence. Then press shift and F3 at the same time. Isn't that annoying when that happens? Here is a link that is a good help: http://www.computerhope.com/shortcut.htm

The answer to this question is going to depend on the OS and the application that you are using. I assume that perryman's answer is for Windows computers. On the Mac that will not work. I know of no universal command that will do this on the Mac. However, if you are using MS Word on a Mac, then click on View in the Menu Bar and move your pointer to Toolbars. In the submenu that this opens, select "Customize Toolbars and Menus..." In the window that this opens click on the "Commands" tab. Next select "Format" from the "Category" pane. Then, go to the "Commands" pane and scroll down until you find the command "Change Case..." (It is near the bottom and has an icon with three A's of different sizes. Two are capital A's one is lower case.) Drag this icon to one of your tool bars and close the "Customize Toolbars and Menus..." window. Now that icon will stay in the toolbar until you remove it. Now, to use this command, simply select the text you want to change and then click on the button. This will open a window with the following options: Sentence case lowercase UPPERCASE Title Case tOGGLE cASE Select the option you want and click on OK. This will change the text to the form that you want. There is one caveat with this command. The Title Case does not differentiate those words that are not supposed to be capitalized in a title (of, the, etc.) from those that are supposed to be capitalized. So you must go back and correct those errors. However, this is still an easier option than going back and capitalizing a long title manually. One other note, this option is also available in the Windows version of MS Word.

1) I chanced on this question because I wanted to ask a similar question. It just happened to me once again and I wondered if anyone had a solution. Here my question: "How often do you erroneously press the caps lock key by typing, and check it first after you have typed more than 20 characters? Do you know some easy way of correcting this without typing it again?" 2) I shall mainly consider Windows; probably the users with Linux will be able to help themselves. As far as I can see, there is no way of correcting this generally. There are only some good text processing programs who bring here some help. This means: copy-paste the text into your text processing, process it, and copy-paste it back. 3) About Perryman's answer: http://www.answerbag.com/a_view/77892 The use of <shift>+<F3> is brilliant, however there are some restrictions: - it does not work in Edit or Wordpad - in does not work in Answerbag answers or comments I can see it work with MS Word. Actually, this toogles the display case between the following three settings: - ALL IN CAPS LOCK - All in small case except the first letter of each sentence - all in small case Those settings and some others can also be made using the Change Case command in the Font group. 4) For those who do not have MS Word, the Freeware editor PSPad has similar Change Case commands to be reached with menu. 5) I just discovered an interesting workaround. I'll try this for awhile... The source of the problem is that you sometimes erroneously press the Caps Lock key, mostly by pressing the Shift key. There is a Windows settings which let you be *aware* that you pressed the Caps Lock key (in any application). It works with XP and Vista. "ToggleKeys is an accessibility feature designed for people who have vision impairment or cognitive disabilities. When ToggleKeys is turned on, your computer will provide sound cues when the locking keys (CAPS LOCK, NUM LOCK, or SCROLL LOCK) are pressed. A high sound plays when the keys are switched on and a low sound plays when they are switched off. This procedure tells you how to turn on ToggleKeys through Accessibility Options in Control Panel." "In the Accessibility Options dialog box, on the Keyboard tab: To turn on ToggleKeys: Select the Use ToggleKeys check box. Note: To turn off ToggleKeys, clear the Use ToggleKeys check box." Source and further information: http://www.microsoft.com/enable/training/windowsxp/togglekeys.aspx