Usage:
leo.py [-h] [-e] [-c] [--elinks] [--w3m] [--lynx] word
positional arguments:
word the word to look up
optional arguments:
-h, --help show this help message and exit
--english, -e look up english (default)
--chinese, -c look up chinese (default)
--elinks the default browser
--w3m
--lynx