# MathJax Local Configuration File (2)

## Background

In my opinion, the default display of the $\rm \LaTeX$ command for $\Re z$ and $\Im z$ don’t look good.

## Problem

I want to reset the \Im command in my local MathJax configuration file source/javascripts/MathJaxLocal.js. I used a script inside the <body> tag to load my local MathJax configurations from GitHub.1 If I want to test the configurations, then I’ll have to push my changes to GitHub before I can see the effect and figure out the errors — this is incredibly slow and inefficient.

How can I locally debug my MathJax configurations?

## Solution

To locally test my MathJax configurations, I put another <script> tag containing the local configurations before the <script> that loads MathJax.js.

I think that rendering $\Re z$ and $\Im z$ with roman font is better.

1. Refer to my old post titled A Quick Markdown Syntax Error Detection for Writing MathJax Equations in Octopress Posts (3) for details.