Here are some examples
{|2017-09-05..2017-10-24|}
{|<=2017-10-24|}
{|>=2017-10-24|}

Think it might be very helpful to include an example of a date range, as this is a very common use-case.

For changes, see section http://www.openehr.org/releases/BASE/latest/docs/odin/odin.html#_intervals_of_ordered_primitive_types

Changed comment in second examples block to
– real interval 0.0 <= x < 1000.0