def parentheses [ ]
You can rewrite as follows.
defparentheses <manued> </manued>
Then you can chenge manued command to like HTML (SGML or XML)
as follows.
<manued>original/revised</manued>
Other examples are: Manued method also defines escape symbol to escape manued symbol. For example, if you want to write `[]' characters as non manued command, you can write `~[~]'. In default, character `~' is escape symbol of manued. Escape symbol is also be able to redefine with other strings and of course you can escape `escape symbol itself', like `~~'. However, too many escapes are harmful for proofreading. Please redefine manued symbols for easy reading.