With the additionof a color 'splotch', 'shade' (whatever), the presence of files could be noted:
![Image](http://farm3.static.flickr.com/2576/3788870954_8ba1882307_b.jpg)
In this screenshot - note a green splotch indicates that there is a recent perio chart, FMX, Letters from Other Docs.
The red flag on the treatment of 5/20/09 (#18 O) notes that a treatment note either hasn't been generated or signed.