XS_ENABLE_MIDDLE_BUTTON_DOUBLE_CLICK_ZOOM_ORIGINAL
This advanced option must be set in an initialization (.ini) file.
When you set this advanced option
to TRUE and
double-click the middle mouse button in a drawing, Tekla Structures zooms
the open drawing to its original size.
Example
XS_ENABLE_MIDDLE_BUTTON_DOUBLE_CLICK_ZOOM_ORIGINAL=TRUE