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

Specifies a logical connection (e.g. ``and'', ``or'', ``if''), usually between
sumti.

la djan. .a la djein. klama le zarci John and/or Jane goes to the store.

Also used to create vowel lerfu words when followed with ``bu''.

