For those of you who have used PuTTY on Windows, you probably have become accustom to highlighting text to copy and right clicking to paste it. Well, that is kind of how it works with ChromeOS on the Cr-48. As it turns out, highlighting text will copy it into a separate buffer (different than your normal ctrl+c buffer). To access this buffer and paste the text, you have to do a three finger hard click on your trackpad. It is that easy!
As a side note, this works as a copy/paste for any situation, not just to/from your terminal.