1973, The Indian publisher and bookseller[1], volume 23, Sadanand G. Bhatkal, page 132:
It consists of 46 keys but it can be reduced to 44, arranged in four rows in two shifts as it is in practice today, or it can be converted to 32 keys with three shifts, to contain 96 characters.
1978, Personal computing[2], volume 2, Personal Computing Magazine, page 44:
Japanese keyboards are very poorly designed and very hard to redesign. Even the national, standard keyboard is very poor. It is divided into four sections. Two shifts for the alphanumeric keyboard and two shifts for KATAKANA. You will have to handle four shifts on the keyboard and that would make the keyboard very difficult to use.
1996 January 21, Konstantin I. Saliy <kis@ipmce.ru>, “Re: Can I remap the keyboard?”, in comp.sys.psion[3] (Usenet), message-ID <3102640e.183117258@ipsun.ras.ru>:
I'd written a keyboard driver which allows to have two keyboard maps and switch between them by pressing two Shifts.
1998 February 5, D. Peschel <dpeschel@u.washington.edu>, “Keyboard hardware questions”, in comp.sys.atari.8bit[4] (Usenet), message-ID <6bb85v$17j8$1@nntp6.u.washington.edu>:
Most other keys send an internal code along with the state of the Control and Shift keys. It is not possible to detect Shift or Control by themselves, or distinguish between the two Shifts.
2000 February 25, Marilyn Matte <ag868@FreeNet.Carleton.CA>, “OT and Long - The Shift Key FAQ”, in alt.support.stop-smoking[5] (Usenet), message-ID <894p36$oga$1@freenet9.carleton.ca>:
Q. What happens if I press both shift keys?
A. Even bigger letters may show up on your screen. You should not use this feature, however, because these letters are also brighter, and may cause Screen Burn-In, which would be particularly embarrassing if you were typing something naughty at the time. You might consider obtaining the author's Shift Key Burn-In Protector program for only $139.95. Or you might not, it's your computer, but don't say I didn't warn you.
2007, Maidasani, Fundamentals of Information Technology Including MS-office, Firewall Media, →ISBN, page 8:
For example: To type o#p, you have to press the shift key and the number key 3.
2008, Dr. Gerard Verschuuren, Excel 2007 for Scientists and Engineers, 3rd illustrated, reviewed edition, Tickling Keys, Inc., →ISBN, page 3:
Pressing Ctrl+Shift+Down Arrow selects the entire range B1:B10. Pressing Shift+Down Arrow once expands the selection with one more cell. Instead pressing Shift+Up Arrow shortens the selection by one cell. The Shift key keeps all in-between cells included in this selection.
2010, Dariush Derakhshani, Introducing Maya 2011, John Wiley and Sons, →ISBN, page 87:
So if you find yourself wondering why pressing a hotkey isn't working, make sure you aren't pressing Shift or that the Caps Lock isn't enabled, capitalizing your entries when they should be lowercase.
