tweak to dark horse
tweak to dark horse


Former-commit-id: 7594947d41967da360b0e8666d16535c0f6c7a4c
Former-commit-id: 59e0458a6a3bb06f57ff00a00ef0b775d79ac261
Former-commit-id: 05dcbfd8f3eab72571e64dae9980ba0f81011972
StanfordHCI/cs247,StanfordHCI/cs247,StanfordHCI/cs247