"Update" will patch your copy of the repository, adding and deleteing files as needed.
A directory must be hilighted in the directory-tree for this command to be used. Optionally, you may select files to be updated in the file-list. If no files are selected, Pharmacy updated to whole directory and, depending on the options selected, it's subdirectories. The default is to update into subdirectories.
FIXME: describe update with options