Originally Posted by Andy_W
Windows 7 users should have an application called Snipping Tool pre-installed on their machines. This application allows you to capture a portion of the screen by selecting a box around what you want to capture.
Hope this helps!
On a Mac, hit "Command-Shift-4", then click in the corner of what you wish to copy and drag the outline around it. It will be saved as a .png file.
Neither Microsoft's Clipping Tool (which saves files in .jpg format) nor Mac's "Command-Shift-4" saves the file as text, however.