It was all tags, only tags, first. Then dudes started outlining their tags. Or putting dots on em to make em stand out amongst all the tags. It was years (mid-late 70's) before fill-in's like we know em started appearing. Lots and lots of early original ground breaking writers had only tags and throws. It took a long time for burners to evolve into the '78-80's era that was made famous by Style Wars, etc.