Re: [O] How to define a start date for a task?

[Karl Maihofer]

Bernt Hansen <bernt <at> norang.ca> writes:
> I think you'll need to write a custom agenda skip function that skips
> your tasks with an inactive START: [date] in the future.  I don't know
> of a way to apply a custom skip function to the global todo and tags
> searches so you'll probably need to use custom agenda searches for this.

I use (setq org-agenda-filter-preset '("-someday")) to skip tasks with
the tag "someday" in my agenda views. But I think it is only possible
to use tags here. 

Isn't there an equivalent where I can put something like 
"-'START: $TIMESTAMP_IA > <today>'"?