True allergies to cow's milk are relatively uncommon. Only 2 to 3 percent of children are allergic to milk, according to the AAP, and almost all of them outgrow it by age 3. (Learn the difference between a milk allergy and lactose intolerance .).
The underscore [ _ ] (also called underline, underbar, low line, or low dash) is a character that originally appeared on the typewriter and was primarily used to underline words.
The underscore key on an American or British keyboard layout is on the same key as the hyphen, and can be used by holding down one of the shift keys and pressing the hyphen key. It is found to the right hand side of the 0 key at the top of the keyboard. Know More.