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 (_).
HM â what does that sign mean? Mark Wert, mwert@enquirer.com Published 10:02 a.m. ET Dec. 9, 2014 HM is a standard symbol used in U.S. road signs to indicate routes where hazardous materials may be carried.