At the start of a clocktable, I can specify a few parameters that allow me
to filter/restrict the time ranges used for display.

For instance, this only shows me clocks from the past 30 days:

:tstart "<-30d>"

What I'd like to do is do this for org-clock-display too.

Perhaps I could specify it at the file level, like:

#+CLOCKPROPS:

Or perhaps this is something I could specify at the node level?

Either way, this would allow me to specify things like :tstart and I could
therefor have my clock display only show me times clocked in the previous
30 days (or whatever).

What do others think about this idea?