[K12OSN] Hidden Folders in home directory

[Ryan Hackl - Spiritwood High]

As I try to troubleshoot various issues, I've come to the conclusion that I 
would find it really helpful to have a summary of what the hidden folders in 
users' k12ltsp home directories are (through doing a "ls -a"), and what their 
purposes are.

So far I've had little success in compiling such a list by searching online. 
Can anybody point me in the direction of a link or file that contains 
the 'meaning' of these hidden folders?

Thanks

Ryan Hackl