We just released two small features which might be helpful for those that write their own questions.

"proportional" token

* The "is proportional to" symbol is now available within SymbolicImage tool. The syntax is simply "propto" or "proportional".

Example usage:
<eqn Symbolic::Image("A propto B")>

<SIGFIGS> tag

* If you've ever wanted to control the placement of the sigfigs icon (which normally appears directly before a numerical box which is checking sigfigs), you now can.

If the <SIGFIGS> tag appears anywhere within a Numerical part of a question, WebAssign will only place sigfigs icons wherever you have <SIGFIGS>. You can use more than one <SIGFIGS> tag in a question.

Example usage:
<SIGFIGS> $<_>