Now we have a common starting point I will make style changes to conform with GitHub Ruby style guide. Most of the code was based closely on the SU 2004 shapes.rb code, and I (loosely) followed that style,  but used tabs instead of spaces (already fixed in most places).

Busy on other things for a while so can't start before Fri pm at soonest  

Tx for your patience. 

I'll go through your earlier notes for specifics, as well as working through the guide.

John 

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