tree 1a025de7bcf9b4a667769c9ad7b74474dac2c36c
parent b80fc4439ebb671af0d491d4a1239b0c19a59e11
author Kazuho Oku <kazuhooku@gmail.com> 1671088267 +0900
committer Kazuho Oku <kazuhooku@gmail.com> 1671088267 +0900

explain the design