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 (_).
1 any direct indicator of an occurrence, e.g. the appearance of spots is a sign of measles (natural signs).  any SYMBOL, including the written marks for words, which stands for â or represents â both a meaning and an external thing which âcorrespondsâ to the meaning. Taking an âempiricistâ view, there is a sense in which signs âpictureâ an external reality (see EMPIRICISM).