Sorry this is probably a very basic question but I am trying to purge some unused layers from my drawing and the help files tell me to:

1. Click the Application button  Drawing Utilities  Purge.

   The Purge dialog box displays a tree view of object types, called named objects, with items that can be removed from the drawing.

2. To purge unreferenced layers, use one of the following methods:
   • To purge all unreferenced layers, choose Layers.
   • To purge specific layers, expand Layers, and choose the layers to be purged.
3. Click Purge.

This is all sounds great but where is the application button?

I've attached a screenshot of my screen.

thanks

Lucy