This extension is to mimics the LaTeX Physics Package in MathJax. For details, see the GitHub pages and the GitHub repository of this extension.

The following commands in the Physics Package is not implemented yet:

• All Matrix Macros
• So far everything done here is by string substitution. Whenever commands involving the following cannot be done simply by string substitution and hence not working:
  1. * modified command
  2. [] (or ()) is involved
  3. variable no. of arguments
• Examples of commands that doesn't work: \dv: has all the properties mentioned above

As I mentioned, everything done so far is by string substitution only. Some hints are given in Pull Request#16---MathJax-third-party-extensions but my skill is too limited to understand how the above cases should be handled. Feel free to improve it though.