Naming Files and Folders
You can rename a file or folder to make its name longer, shorter, or more explicit.To rename a file or folder:
1. In Explorer, select the file or folder that you want to rename.2. Choose File > Rename (or press F2).or Right-click the file or folder; then choose Rename.or In the task pane, click Rename This File (or Rename This Folder).or Click the file or folder's name (not its icon).3. Type a new name; then press Enter (or click outside the name area) (Figure 5.30 ).
Figure 5.30. To replace the current name, just start typing. To change a few characters in the existing name, use the arrow keys to move to a specific position; then insert, delete, cut, or paste characters.

Naming Rules and Tricks
A file or folder name can contain up to 255 characters, including the extension (the part after the dot). Spaces and punctuation are permitted but names can't contain these characters: \ / : * ? " < > |.(Note that this paragraph contains 255 characters.)A folder can't contain two items with the same name. Windows is case-insensitive (it considers MyFile.txt and myfile.txt to be identical), but it preserves the case of each letter.If you select multiple items and rename one of them to, say, MyFile.txt, Windows renames the others MyFile (1).txt, MyFile (2).txt, and so on. If you bulk-rename a bunch of files accidentally, press Ctrl+Z repeatedly to revert to the original names.Better File Rename ($30 U.S.; Setting Folder Options" earlier in this chapter.