Comments and Questions

This is a fine paper, which makes an interesting contribution to a hotly-debated question. Having read the two reports and the author’s response to them, I’d like to suggest the author produces a revised version taking into account all the comments made. I think the second referee’s idea of making the codes available is an excellent one. I’d be grateful if you could do this, and particularly address the following points to ensure the code is very easy to understand: 1. A separate document should set out the linearised system, explain carefully the solution technique and give the reader some pointers to how the code works. 2. The code should include: - carefully commenting- links from equations in the code to their counterparts in the text. - features to make it easy for the reader to reproduce the figures. An example would be to include a switch to control whether PCP or LCP is used I look forward to reading the revised version.