The rule for one dimension filter (l, r, g, a or b): a code from that
dimension's table in DIMENSIONS. What the API does with an unknown code is not
live-verified — if it ignored the parameter, the caller would silently get the
unfiltered slice — so an unknown code is rejected rather than sent. Anything but
a positive safe integer (NaN, Infinity, a fraction, a string) is rejected too.
The rule for one dimension filter (
l,r,g,aorb): a code from that dimension's table in DIMENSIONS. What the API does with an unknown code is not live-verified — if it ignored the parameter, the caller would silently get the unfiltered slice — so an unknown code is rejected rather than sent. Anything but a positive safe integer (NaN, Infinity, a fraction, a string) is rejected too.