Functions for use with virtual tags

[IMGrant]

Are there any functions such as logic tests, string manipulation, etc. that can be used with the virtual tags?

I usually store the date in my files as 'YYYY MM DD', what I want is to create a virtual tag that is only the first four characters of this tag, i.e. just the year.

[Steven]

no such function exists as yet - i've moved this to the wishlist

[IMGrant]

Okay, excellent, thanks, will look forward to it!