You may find that you need to provide extra information to a helper application, such as the pathname to the site you are working on, or the current folder that the document you are using is in etc. The following special flags are available for this purpose:
| Flag | Purpose |
|---|---|
| %f | current document filename, including directory |
| %U | current document uri |
| %d | current document directory |
| %S | current site directory |
| %% | a normal % character, should you need one |