description:
is-less-equal-than[value] ket
returns yes/no if value <= the value in ket
examples:
is-less-equal-than[80] |age: 76>
|yes>
is-less-equal-than[2010] |year: 2010>
|yes>
-- if the ket has no float value, then return |>
is-less-equal-than[13] |the cat>
|>
see also:
is-greater-than, is-greater-equal-than, is-less-than, is-less-equal-than, is-equal, is-in-range
greater-than, greater-equal-than, less-than, less-equal-than, equal, in-range