Answer: underline

AnswerCrossword Clue
UNDERLINEEmphasize
UNDERLINEHyperlink feature
UNDERLINEMark for emphasis.
UNDERLINEStress
UNDERLINEEmphasize writing, in a way
underlineDraw a line under (a word or phrase) to give emphasis or indicate special type
underlineEmphasize (something)
underlineto draw a line under