folder returns the parent folder of x, or NULL if the x is the root
level. folder<- returns the
x input, having been moved to the requested location.
Arguments
x
For folder, a Variable to find. For folder assignment, a Variable,
selection of variables in a
Dataset, or any other object that can be moved to a folder.
value
For assignment, a character "path" to the folder: either a
vector of nested folder names or a single string with nested folders
separated by a delimiter ("/" default)