When the Sun and Moon line up at new moon or full moon, what happens to the tides?

1. Both the Sun and the Moon raise tides, though the Sun's effect is the weaker one. 2. At new moon and full moon the two pulls act along the same line. 3. Their effects reinforce, producing higher tides than usual, called spring tides. 4. Neap tides are the opposite case, at first and last quarter, when the two pulls partly cancel. _Source: OpenStax Astronomy (CC BY 4.0), Ch 4 "Earth, Moon, and Sky" and Ch 5 "Radiation and Spectra", section 4.6 Ocean Tides and the Moon_