## The difference between org-ref and org-bibtex

In case you were wondering, here is an answer:

Some features could be merged, but there is an important difference in that org-ref uses bibtex as the backend database, and reftex for searching, and org-bibtex uses org-mode headings as the backend database, and tag/property searches (I think). It is like the difference between org-contacts and bbdb. They both serve similar needs, but with different data sources, and different ways to think about it.

Both approaches are quite nice. Sometimes it seems easier to be able to share the original, not exported, database with folks even though technically it makes no difference what is the system or origin for that data!

## DIagrams Through Ascii Art

ditaa is a small command-line utility written in Java, that can convert diagrams drawn using ascii art (‘drawings’ that contain characters that resemble lines like | / – ), into proper bitmap graphics.

You have to see it to believe. For you text-heads out there, yet another great tool for us!

## AcroTEX and eqExam for the Truly Impatient

eqExam is just a wonderful LaTeX package for writing things like exams and quizzes. It takes into account most of what you are about right out of the box like whether you are proctoring the exam online or in printed form and whether you want an answer key printed or not. Here is an example of something that I threw together quickly by hacking up one of the example tests.

There are even really advanced things like exporting the answer data for automatic electronic submission; it’s got me really curious how people are using this in the wild.

Setup is really easy, the only caveat is that you must use MiKTEX version 2.8. Version 2.9 seems not to run at this point.

If you have never set up MiKTEX or eqExam before then my directions are attached here. Please let me know how it worked for you if you try them out.

One big question for some of you is why you would use something like this rather than MS Word or Adobe Acrobat Pro and it is a good question. The only answer that I can share is why it is so valuable for me… it is because you get to use all of the power of LaTeX to generate PDF forms and exams. That might sound like not a big deal, but if it doesn’t then you should really dig deeper into LaTeX to see how it could help you to better communicate.

## How to render a ^ (carrot) in normal LaTeX text

Here are two ways to render a ^ (carrotcaret) in plain text within LaTeX:

\documentclass{article}
\usepackage[T1]{fontenc}
\begin{document}
A caret: \verb|^|
\end{document}

\textasciicircum


I tested them and both work as prescribed. They produce different carrotscarets.

(via comp.lang.texcomp.text.tex)