cuspe experimental gismu

x1 is a songbird (e.g. finch/wren/sparrow) of species/breed x2

In definition:

torxesu
x1 is a torus of genus x2 (li; nonnegative integer), having x3 (li; nonnegative integer) distinct cusps, and with other properties/characteristics x4, by standard/in sense x5; x1 is an x2-fold torus.

In notes:

fancysuksa
function f1 is discontinuous/abrupt/sharply changes locally (in output) on/at s2 (set), with abruptness of type x3 (default: 1)