An OpenBSD implementation of Ward Cunningham's automatic morse teacher pesco DC4HK 2021 How to build: $ make How to use: $ ./teach.sh [level] ... follow the on-screen instructions ... Useful environment variables: MORSE_SPEED set output speed in words per minute [24] MORSE_PITCH set output pitch in Hz [600] MORSE_LEVEL set default starting level [2] See NOTES for more background.