spm

Add notes about using ln(1)

diff --git a/README.pod b/README.pod
@@ -31,6 +31,10 @@ can be interpreted as a (sub)group to manage large collections easily.
 This allows for transparent integration with git(1) for example to keep
 track of changes and/or add comments while editing passwords.
 
+Using ln(1) entries can be symlinked to indicate multiple accounts or
+users share the same passphrase or create shortcuts to frequently used
+entries for example.
+
 tpm I<list> followed by a directory path, that is a group name, lists
 all entries inside the specified group as well as all its subgroups.