# Functions
NewEnvFallbackFlag constructs an EnvFallbackFlag with the provided env var as a fallback location to read values.
NewTraindownReader returns a new TraindownReader.
# Structs
EnvFallbackFlag is a custom flag type which retrieves the value from either an input flag or env var.
TraindownReader reads a file or directory and returns Traindown data.
# Type aliases
A string set which maintains an ascending sort order.