Changes up to # aeb4e32ee7a0 +2 touching docs/spec.md · 3
See as swimlanes (independent work side by side)
aeb4e32ee7a0f2b6d9e0b4447697226acc0257cc2527c308ae2b0889c45e9d03+b55e0d00545e2c2dbe36765341deb92f6e2ee5aa7d3e30ae1936302c243c681a+d7274fc3100a1e7d1be0704e6dad9e177e0545e0fbc8a932b1ff0dd53ba7f599 has 3 heads. The graph shows their union; heads are marked.