This comment applies to multiple lines.
"open" should be used with caution as it is reserved by Dragon naturally speaking for opening applications.  I use it myself in some grammars, mainly for "open comment" commands, and sometimes it i unavoidable because it is hard to find a natural phrase without the word "open". I will accept the pull request with the "open" commands, if you feel that it is the right phrase to use.
I'm considering switching my own "open comment"/"close comment" phrases to use "start comment"/"end comment" since the word "close" is also reserved by Dragon naturally speaking for closing applications.