Below is the description of the environment you are seeing above. The applet is reading it from this file. (The area outside the defined map is generated by a mathematical function)

!begin_map

   x+x+xA+x+Bx+xC+x+x
   +x...............x
   .......$.........D
   xI...............x
   x++x+x+x+G+x+Fx+x+

!sky clouds2.jpg
!begin_def
  + solid img=wood1.jpg
  x solid img=wood2.jpg
  . space c1=sky c2=336666
  $ copy=. start
  A copy=+ ' |  About' 'URL=links.htm#about'
  B copy=+ 'User Docs| |Click here' 'URL=links.htm#docs'
  C copy=+ 'Maze' 'URL=maze1.htm _top'
  D copy=+ "Ice Skating" "URL=iceskate.htm _top"
  F copy=+ ' * FAQ *|Frequently|Asked|Questions' "URL=links.htm#faq"
  G copy=+ img=ximg07a.jpg
  I copy=x "Outside| | |Click here|for more|info" "URL=links.htm#outside"
!end