2 commits

Author	SHA1	Message	Date
Simon Brooke	bc7e0f44d3	Further work on documentation and thinking. Not all tests pass.	2020-04-15 20:20:12 +01:00
Simon Brooke	3fcf16e079	Much work on tidying documentation, not yet complete.	2020-04-15 16:40:59 +01:00