Closed range: ... aka the stony path

Half open range #1: ..< aka the manic upside down duck

Half open range #2: <.. aka the upside down chick

Fully open range: <.< aka the disapproving squint

Alternatives

If treating the < portion visually, like ] and [:

Half open range alternative: >.. another manic upside down duck

Fully open range alternative: >.< aka the d’oh operator