The "Extras" directory contains the following files:

!!ReadMe       This file
!TemplHlp      Interactive help data, to be used by !StrongHelp. To use
               the help files, run !StrongHelp first, then double-click
               on the !TemplHlp icon
NewIcons       Information on the standard icons that are listed in the
               RiscOS Style Guide
SaveWimpSpr    Small Basic program to save the sprites in the Wimp
               sprite area to a file; sprites from the ROM and RAM
               part are saved separately
Sprites2D      Sprites file to replace the default (3D) sprites file
               if you want to use TemplEd with windows in 2D-look
Templs2D       Templates file for the same purpose. To get 2D-windows,
               rename the files "Sprites" and "Templates" in the
               TemplEd application directory, and replace them with
               copies of "Sprites2D" and "Templs2D"
Use2D, Use3D   A couple of small Obey files for easy switching between
               standard and 2D templates