These lines specify that pressing Alt while clicking the right mouse button activates hotspots:
Session.HotspotsChord = rcRightButton
Session.HotspotsModifiers = rcAlt
These lines specify that pressing Alt and Shift while double-clicking the left mouse button activates hotspots:
Session.HotspotsChord = rcLeftButton_DoubleClick
Session.HotspotsModifiers = rcAlt+rcShift
These lines return to the default mouse chord settings for hotspots. Clicking the left mouse button activates hotspots:
Session.HotspotsChord = rcLeftButton
Session.HotspotsModifiers = 0