Paintbrush Selection Mode

On the Vein Intercepts tab, in the Select group: Click Paintbrush Selection to paint over an area and select objects within it.

Click and drag the mouse to draw a "ribbon" around the intervals you want to select. Intervals that intersect the ribbon are selected. Up and Down arrows can be used to increase or decrease the thickness of the brush stroke. Right-click to end the selection. You can also use the CTRL key with the mouse to make multiple selections.

Vein Intercepts