040000 tree 6152df5bb98b331e60db15dc3088cabb326c4594	browsers
040000 tree 8f27fb9ccc17aa890c3de75b88fbe0109905bf16	dom
040000 tree 6025fbce750e306148258c65e8f3c21cda5873f6	semantics
040000 tree 44af341286dee959a9abca0c4e376be93b8c9b92	syntax