Thing 9 on line collaboration

Didn't spend much time on these.  On-line collaboration tools have their place and something to remember ?!! for the future.  The Google one appeared easier. At least it was easier for me to get into and leave a comment as well as get into the actual text and change.  I was able to leave a comment in zoho but couldn't get into the document even though I had permission. Probably wasn't doing something right.