D 2021-02-25T05:04:27.551 T +comment c4bb0e3270f18c7cde8da89239d50387f218d8e0 Implement\sthe\s{append}\smacro;\salso\sstart\sto\simplement\sarrays\sin\sthe\sconversion U user Z 0ba428755e5b0db101628044615390e0