Khan/khan-exercises — pull request #24661 by Christi (2012-06-23 03:02:29+00:00)
Title: Numberline 3 fix #18092 and other related (marked notabug)

removed the labeling for the orange dot which may be causing confusion (not important given hints).
added class="final_answer" to bold answer.
also added a toFront to orange dot so don't end up with weird looking graphs when orange dot is on marked number.