인쇄물의 교정 과정에서 서체가 잘못되었음을 나타내는 약어.
A proofreading mark indicating that a character or word is in the wrong font.
예문:
"The editor used a red pen to mark 'wf' on the margin of the manuscript."
"A 'wf' error often occurs when mixing different character sets in a single paragraph."