<moon__> mk cmdutil/todo//#!/bin/sh \\n [ "$1" ] || exit 1 \\n printf "%\\n" "$1" >>cmdutil/todo \\n printf "%d) %s" $9qc | cut -d\' \' -f1) "$1"

|a+b@| = { √(a²-b²) if a²-b² ≥ 0 ; i√(a²-b²) if a²-b² < 0 }