Editing Marquardt Butterfly (section)

===Olympia multi-switch module===
Olympia typewriters with Butterfly switches use a three-way multi-switch module on the left side of the alphanumeric area. The front and centre switches are grey and the rear switch is black. The likely explanation is that the two grey switches form a latching shift lock with remote release (by pressing either shift key). Existing photos of the insides of this module don't quite clarify the functionality of this module.

The module is completely indivisible: it is not three switches semi-permanently attached, but rather a single moulding divided into three switch units.