I found the answer in the German language Wiki, which is useless if you can't read German.
The answer is
Hammelsprung.
A
hammel is a male domesticated sheep.
A
hammelsprung is a gate just wide enough to let one sheep through at the time, for the purpose of doing a head count.
In
Bundestag parlance the
hammelsprung is a voting procedure where the representatives enter the hall through three different gates.
Gates for the
Yeahs, the
Nays, and the undecided.
The Westminster Parliament has a somewhat similar procedure called the
Division of the House.
Tradition is nice, but electronic voting would certainly speed things up.
