With the Guides tool, Ctrl-click anywhere in the drawing area to create an Anchor, or Alt-click to create a Pin.
Click and drag the mouse pointer to perform a measurement — this makes it work like the Meter tool in FontLab Studio 5.
With the Guides tool, hold Alt when dragging to create a vector element guideline in the current element. Hold Shift while dragging to maintain the vertical or horizontal direction.
Element guidelines belong to elements: moving or deleting the element also moves or removes its guidelines.