I find this story odd because IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key, located in the same place where you would find a tab key on a modern keyboard, to move the cursor to the next field.
https://www.bitsavers.org/pdf/ibm/3278/GA27-2890-4_3278_Disp... (Page 73 of the PDF)
As an aside, it's worth noting that moving between fields was important enough on IBM terminals that they had a dedicated "back tab" key located on the opposite end of the keyboard to the tab key. On the original IBM PC, they decided to combine both functions into a single key. As a result, the tab key on the classic PC keyboard features the symbols for both forwards tab and back tab on the same key, the back tab symbol being on top to indicate that you need to hold down shift to use that function.
EDIT: The 5250 series terminals used the terms "Field Advance" and "Field Backspace" instead of Tab and Back Tab, but otherwise they used the same symbol on the keys, and the keys were located in roughly the same position as the 3270 series. Reference: https://www.bitsavers.org/pdf/ibm/5291/GA21-9409-0_5291_Disp...
Having worked at IBM, I would guess that using the tab key in this way was part of a patent they were pursuing and Microsoft's use would show this to be 'obvious' and thus not patentable. But that is just a guess.
In the 80's IBM had a whole class of high level technical people called "Systems Engineers" whose entire job description was to opine on the merits of any given system. Not write systems, not debug them, and certainly not to explain them, it was simply to opine "you're doing it wrong."
> IBM was consistent with their keyboard nomenclature across multiple products, and the 3270 series mainframe terminals used the Tab key
While it seems odd in light of IBM's usual adherence to corporate norms across business units, having read a couple different books on the origins of the PC at IBM, it may be related to the entire PC unit in Boca being an extraordinary aberration outside the norm for IBM. Despite seeming hopelessly corporate to the Microsoft team, the Boca IBMers were considered a "Rebel Unit" inside IBM - when they were considered at all, since the vast majority of IBM wasn't even aware of it.
Due to being started virtually overnight (in IBM timescales), running incredibly fast and only existing thanks to Thomas Watson, Jr. himself overruling his lieutenants to approve such a "skunk works", Boca didn't have nearly the level of oversight, coordination or control as an effort that size normally would. In the early days Boca ran largely outside normal reporting channels and when they'd try to source tech or components from other parts of IBM, had to sometimes clarify that they were in fact part of IBM.
From what I remember, there were two "Enter/Return" keys on IBM 3270 terminals. One was the regular "Return" key we have today, which just advanced to the next field, and didn't submit the form. There was also another "Enter" key where the Right Ctrl key is today, and that submitted the form. So, I presume, instead of being against Tab key, IBM might be against "Return" to be the form submit key as people who use 3270 would expect it to advance to the next field.
And that was true for many DOS programs. Pressing Return would just go to the next field, not submit the form. That was one of the things that needed some getting used to on Windows.
Funnily enough, IBM had already published this. CUA explicitly says tab and backtab move between fields.
so they spent seven layers of management escalating against their own standard: https://archive.org/details/ibmsj2703E/page/n13/mode/2up
Also conspicuously missing from the story is what key IBM DID want to use. I mean... that's the first question you'd ask!
Lame.
And this is a great example of why I read the comments on HN stories... thanks for the info!
RIP /.
Here's a real IBM 3270 keyboard.[1] Note the "Next field" key on the left, and the matching "Previous field" key on the right.
The IBM 3270 was a device for filling up forms. The mainframe sent the terminal a form with blanks, and the terminal let the user fill in the blanks. The terminal hardware prevented the user from overwriting the static parts of the form, and could apply some other form constraints, such as numeric fields. That was all done by the terminal. When the form was filled in, the user pressed ENTER, and the completed form was sent to the mainframe as one transaction. This approach let one mainframe service huge numbers of terminals. The user never experienced delays while typing and could type at full speed, often without looking.
PCs didn't have that usage model. The PC crowd was thinking "typewriter". One of the first terminals for home computers was called the "TV Typewriter".
Web forms do have that model, but with less consistency.
[1] https://sharktastica.co.uk/resources/images/model_bs/themk_1...