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.
Alternatively referred to as a low line, low dash, and understrike, the underscore (_) is a symbol found on the same keyboard key as the hyphen. The underscore is commonly used as an alternative to the space key when the space is not allowed.