Answering the questions:

Sergiu Dumitriu wrote:
> Q: Should I leave just PNG as the output format?

It seems that keeping JPG and GIF is still needed. Now, I'm thinking 
that my initial approach (making this a per image option) is not good, 
and instead it should be a per user/global option. It is more likely 
that one user would want to see all images in the .gif format than an 
author wanting to create an image in the .gif format for everybody else.

> Q: Is the default DPI setting OK?

Nobody commented on this, so I'm going to assume it's OK.

> Q: Does anybody know of any security issues with running latex, dvips or 
> convert? Especially with the \openin and \openout commands?

This question still needs some answers.

> Q: Is the macro name appropriate? Do you know of a better one?

Point taken: formula is better than equation. Actually, initially it was 
named "formula", but I didn't like it that much. Anyway, the community 
has spoken.

Point not taken: rendering is the right name IMO. Before xwiki-rendering 
as a syntax converter, rendering has a widely accepted sense as 
generating raster graphics. From Wikipedia: "Rendering is the process of 
generating an image from a model, by means of computer programs". This 
is what the module does, and the fact that we have another thing called 
"rendering" doesn't mean that we must invent new names for something 
standard.

Plotting is different, it involves vectorial graphics, and I tend to 
associate it with Logo and its turtle. Displayer is different, it means 
actually presenting the image to the user. LCDs display, papers display, 
but this module is just creating raster images in memory.

> Future work:
> - make sure that there are no security issues with the Native backend
> - add support for MathML display for the clients that understand it
> - improve the alignment of images (especially for the Native backend), 
> as right now they are a bit raised above the text baseline

Add: making it work with PDFs and other exports.

-- 
Sergiu Dumitriu
http://purl.org/net/sergiu/
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