% Setup commands for 6 editors (one more than allowed).
\addeditor{anony}
\begin{document}
Any revisions \remove[anony]{should}\add{could} be \remove{clearly} highlighted, for example using the "Track Changes" function in Microsoft Word \add{program}, so that changes are easily visible to the editors and reviewers.
http://goo.gl/Xi9n3F
TrackChanges 라는 사설 패키지 인데 사용이 간편하더군요.
Option 지정에 따라서
위와같이 잘 표현해줍니다.