print('Generates the sequence from START to STOP (inclusive) using ALPHABET', file = sys.stderr)
print('If STOP is omitted, it defaults to START, effectively making this a simple base transformation', file = sys.stderr)
print('START and STOP have values of the form [[VALALPHABET]:]VALUE.', file = sys.stderr)
print(' In the [VALALPHABET]:VALUE form, VALUE is expressed in terms of VALALPHABET, which defaults to ALPHABET if omitted.', file = sys.stderr)
print(' In the VALUE form, it is treated as a decimal number.', file = sys.stderr)
print(' In the [VALALPHABET]:VALUE form, VALUE is expressed in terms of VALALPHABET, which defaults to 0123456789 (i.e. decimal) if omitted.', file = sys.stderr)
print(' In the VALUE form, it is converted using ALPHABET.', file = sys.stderr)