This is a shell repository so that you can simultaneously work on these sub-repositories

pyclaw-sisc      - the private staging repository for the PyClaw submission to SISC 
pyclaw-sisc-rr  - a public repository for storing reproducibility data and methods 

You should be able to use most hg commands from this repository and you can treat the two sub-repositories as subdirectories.

Some exceptions:
always use hg pull -u or you will get weird states
use -S on hg status and its ilk to automatically recurse into subdirectories

Please read this to understand the potential traps of this approach

Some other useful notes: