Here are some of the most common types of eruptions: In a Hawaiian eruption, fluid basaltic lava is thrown into the air in jets from a vent or line of vents (a fissure) at the summit or on the flank of a volcano.
The underscore sign is mainly used to show a space where a space is not allowed, such as in internet usernames, email addresses and some computer programs. The underscore looks like a dash below the letters (_).
In art, an underpainting is an initial layer of paint applied to a ground, which serves as a base for subsequent layers of paint. Underpaintings are often monochromatic and help to define colour values for later painting.