040000 tree b0187abad92eb35ef946afa1410fe9f716738cea	diagrams
040000 tree d1d083722f6ca055f6f1a97fe35e2fedb6b37698	hacking-guide
040000 tree 912ca965f6674981b23a9e5a443ca42e8911d2cb	migration-guide
040000 tree c74eda38ce7f8498406f990a0a7629fa00444a46	user-manual