search for: mycustomloc

Hi, I am new to R and have a couple of questions. I know how to list all objects (with ls()), but how to list all properties of them? For instance, I found function object.size(), but I would also like to know whether one object is a dataset or just one vector (variable) or even only one value, etc... And another question - how to save workspace to a custom location while running R? Is there