File handling / Disambiguation of file operators

[phillarmonkey]

• Fixed file handling expansion when using the home alias ~ or env vars such as $HOME
• Removed some ambiguation doubts around the definition of folder and directory/dir
• Reformatted the markdown for proper spacing on tables

[andersonpem]

Indeed, I've questioned myself before about the lexical difference between directory and folder. Good to see it now specifically defined as the same.
Tested here on my side. Works nicely. And no changes to extensions required. Reboot and bam, works.

Thanks, B.