I tried to bind jump command to a key using following syntax: bind z "+jump" / "-jump" "Z" letter appeared in controls options menu in "jump" entry, but when I press "z" player starts jumping and never finishes. <!-- s:? --><img src="{SMILIES_PATH}/icon_confused.gif" alt=":?" title="Confused" /><!-- s:? -->

Maybe it is a bug, but AFAIK there's no need to place a '+' before the jump command.

It's because you put a slash between commands.