Internal function used within objectNames.
.parseArgs(y, e, eminus1)A list of length 2, with names objs and envs giving the
standardized representation (i.e., replacing [[]] with $ notation for objects) of objects
and their layers (if RasterStacks).
A character representation of the arguments passed to a function, e.g., Plot.
Environment in which the function (e.g., Plot) was called.
The parent environment of e.
Eliot McIntire and Alex Chubaty