Handy Key Presses for Track Laying

By chance, I discovered two handy and undocumented functions of the World Editor for laying track:

In both cases, you start track laying as usual, expanding the track ribbon. Before you click the left mouse button to really place the ribbon, you press either Shift or Ctrl and release them after you clicked.

Shift switches "camera follows track" on even if you have not select this option in the bottom left flyout. But if this function is selected in the flyout, Shift does nothing, i.e., it does not temporarily turn it off.

Ctrl toggles the "snap to track" function. I.e., if you press Ctrl and this function is not selected, then for this one track placement, the curve will snap to straights (which will turn pink in the process) to form a converging junction. If the function is selected and you hold shift, you will be able to draw a straight (showing yellow), deactivating the "snap to track" for this one section of ribbon.