To be able to make a call at data stored in [value]s in [if] and [expr] would be fantastic. When you want to use formulas where the members change a lot somewhere else in the patch, it'll be handy not to have to get them out of their v object again each time... I'd be very happy to write [expr $i1 * ((grid_unit * factor)*zoom_x)] instead of using [t b b b] and such...

f.e

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