GAhO (http://www.lojban.org/en/publications/reference_grammar/chapter14.html)

Specifies whether an interval specified by BIhI includes or excludes its
endpoints. Used in pairs before and after the BIhI cmavo, to specify the nature of
both the left- and the right-hand endpoints.

mi ca sanli la drezdn. ga'o bi'i ga'o la frankfurt. I [present] stand Dresden
[inclusive] [interval] [inclusive] Frankfurt. I am standing between Dresden and
Frankfurt, inclusive of both.

