I can *easily* enter an existing hierarchical Tag

(User Story, Investigate , Priority: High, Test Status: No automated tests yet , Reported By Justin du Coeur, )
Summary: That is, if I have already defined the tag Clothing/Dresses/Long, I should be able to enter that by typing, eg, "cl/dr/l", with the system auto-prompting for each level separately.
Depends Upon:
The implication is that both the back and front ends need a clearer semantic concept that a Tag may be composed of higher-level Tags.
This may be the straw that breaks the camel's back and forces me to rewrite MarcoPolo in Scala.