If you have edited Wiki pages then you know what this is about.

For those that haven't...

.wfc files are simple text files (don't use a word processor or html editor to edit the files - use a text editor, such as notepad).

In the following examples the text displayed in the box represents the text in the wfc file - the result of which is displayed below. Your site designer may have changed the look and style of each of the features for your web site - but the format of the .wfc files remains the same.