In my blog description, I promised to write occasionally about the early Windows days. So here’s a post on how David Weise and I got Windows 2.0 into protected mode and blew away the old DOS 640 KB RAM barrier. If this hadn’t happened, we’d probably be using some variant of OS/2 today instead of…

# Year: 2006

## LineServices

One of the key technologies behind the high quality display of mathematical text in Word 2007 and RichEdit 6.0 is a special component called LineServices along with its sibling Page/TableServices. In addition to handling math display, various versions of LineServices are responsible for line layout in Word, Publisher, RichEdit, PowerPoint, Internet Explorer, FrontPage, Visio, and…

## User Spaces in Math Zones

Spacing in mathematical expressions involves well defined rules. For example, in the expression a+b=c, a good math display engine automatically inserts 4/18 em on each side of the binary operator + and 5/18 em on each side of the relational operator =. Proper spacing between two characters depends on the properties of each character. Section…

## Mathematical RTF

This post discusses the Word 2007 math RTF control words. A good way to understand these control words is to note that they are actually OMML tag names written with RTF syntax. Hence you can refer to the very thorough OMML documentation for more detailed information. For example in OMML, the built-up skewed fraction for…

## Some RichEdit History

A couple of comments have raised the question of people outside Microsoft using the various versions of RichEdit. Specifically, Teis Johansen asks, “Just to be sure. Can I redistribute RichEdit 6.0 with my application?” and Kyle Alons asks, “So what’s the point of listing these features without documenting how to use them? Just to make…

## RichEdit versions

Recurring questions are what RichEdit’s are available, where they are installed and what features they have. A relatively new question is which RichEdit’s support the new Office math editing and display. So this post attempts to answer these questions. To answer the last question first, only RichEdit 6.0 has the Office math facility, although RichEdit…

## MathML and Ecma Math (OMML)

Before comparing these two math XMLs, I’m excited to point you at Jennifer Michelstein’s nifty post on Equations in Word 2007. It comes complete with instructive videos demonstrating how to enter mathematical expressions using the Equation Ribbon as well as using the linear format discussed in my earlier postings. Jennifer plans to add other posts…

## How I got into technical WP

This post tells a bit of how I started in technical word processing back in the middle of the last century. More precisely it was in 1965 that I started using a nifty (for that time) vector plotting program by Grey Freeman at the Yale Computer Center. I was a Yale grad student in theoretical…

## High-Quality Editing and Display of Mathematical Text in Office 2007

This post is a summary of material I’ve given in recent talks on math in Office such as this one. In the talks, I describe and demonstrate how Unicode’s rich mathematical character set combined with OpenType font technology, TeX ‘s mathematical typography principles, and enhanced autocorrection can be used to produce high-quality, streamlined technical text…

## Formula Autobuildup in Word 2007

This is an introductory post to help users who want to create stunning technical documents in Word 2007. If you’ve typed Alt+= in Word 2007, you’ve seen a math-zone object inserted that says “Type equation here”. Actually you can type any mathematical expression there, even just a simple variable like x. If the expression’s math…