Is there a term for the use of filler sounds in written language? For example, when someone writes:
"Um, what? Everybody knows that." or "Oh, I guess you didn't know."
I understand in the spoken word these sounds can serve the purpose of signaling a pause in speech and are referred to as fillers. Is there a different term for the written word, and is there a purpose to these other than an attempt to convey some kind of emotional tone to the sentence.