Hi Anand,
Thanks for sending in this question about Kolibri Studio.
It’s very exciting that you’ve discovered Ricecooker! Ricecooker is a tool we’ve developed for efficiently importing large amounts of external content, such as content from Persius and Khan Academy.
Channels created using Ricecooker can be updated by simply re-running their script. Any files that have already been uploaded won’t get re-uploaded on subsequent runs.
As you’ve noticed, these channels cannot be edited directly in Kolibri Studio. However, you can still remix their content into other channels created directly with Kolibri Studio.
As for your question about typesetting math, anything between double dollar signs should be interpreted as latex. For example:
Here is an exponent: $$e^x$$. Here is a fraction: $$\frac{x}{y}$$.
I hope this clears things up!
Micah