This is a minor thing which I found useful- The "help" functions of all my bash-defined functions report which file they're defined in (such as: `echo "This function is defined in ${BASH_SOURCE[0]}"`). If I could do something similar for my environment-defined values (hmmm, now I'm thinking...), I would. (I could create a function that tracks at least the changes _I'VE_ made to these values, which could help...)