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.ow to create an underscore. Creating the _ symbol on a U.S. keyboard. To create an underscore, hold down the Shift key and press the  -  (hyphen) key to the right of the 0 (zero) key on the top row of your keyboard.