A family of Microsoft word processing software products for creating web, email, and print documents.
The 'text Boundaries' in Word 2010 were exactly what was needed, however 'accidental'.
You'll notice she never said it was accidental in 2010. That's because the entire use of the word "accidental" is, to use the polite phrase for "outright lie disguised as something else," disingenuous.
I discovered text boundaries pretty early on in my use of MS-Word. I liked it so much I wrote a macro to toggle it on and off from the toolbar. Still use it, although now the feature has been ruined. The date on that macro? 06/01/1998. Yep, the "2010 accident" has existed at least for the past seventeen years.
No one is claiming that the accident is recent or limited to Word 2010. It was there in all previous versions AFAIK. The re-writing of the layout generation engine for Word 2013 changed this structure.