Paste
1. An operating systems and programs action that allows a user to copy or cut an object or text from one location and move it into another location. For example, a user could copy a URL sent to them by a friend in chat, e-mail, or over an IM and paste that URL into a web browser to visit the website.
Tip: If the text, image, or other objects that have not been properly copied first, it cannot be pasted.
How to paste
Move the cursor to the location you wish to paste the contents to and click Edit and then Paste.
or
Use your mouse and right-click in the area you wish to paste and select Paste in the menu that appears.
or
Move the cursor to the location you wish to paste the contents and on the keyboard press CTRL + V or Shift + Insert shortcut keys.
Practice pasting text
Using the below two text fields try cutting the text in the first box and pasting it into the second box.
2. Linux command, see the paste command page for additional information.
Also see: Clipboard, Copy, Cut, Move, Paste special, Pastebin