Author=John Simpson
    System=Acorn BBC Micro/Master/Electron
    Language used (name and possibly version)=Assembler
    Length of source code (e.g. assembler source or text file, if BASIC was used)=1,127 bytes assembler file in BeebAsm format
    Length of executable file=96 bytes
    Instructions on how to run the code:
	
	Install an emulator such as BeebEm.
	Insert disc image (eg File -> Load disc 0 ... select tree.ssd)
	
	Type *TREE