MyCode Requests

Some experimenting has presented me with the previously unknown

Code:

[border]

tag. Can we add this to the MyCode reference for others?

I also realize with this code a random m-dash will apear when writing in border when the text is small. Can this be removed? 

EXAMPLE:

Lorem ipsum dolor sit amet, stet probo alienum eos te. Te pro movet recusabo, vim id solum quodsi minimum, nec sumo vulputate scribentur ne. Doctus elaboraret qui at. Reque dicam ei eos. Vel modus docendi partiendo id, ex lobortis
referrentur ius. Ut mei repudiare urbanitas, eos id wisi suscipit delicata.