Create Underlined Spaces That Remain When Typed On

Underline spaces can very helpful if you want to tell the reader where to enter data, for example, type their name and address on an application form.
Name:
Address:
City:
The problem is that if you use a normal underline, it doesn’t work. The moment you type on it, the underline disappears. What you want is for the underline to remain where it is – even when you type onto it.
To create underlines that you can type on, follow these steps:
Press Ctrl + Shift + U and then press the Spacebar. This creates the underlines.
Type onto the underline. Notice that it doesn’t disappear.