Human Interface Guidelines/The Sugar Interface/Input Systems: Difference between revisions

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 |[[Image:Key_erase.jpg|right]]
-|We've replaced the backspace and delete keys with an erase key.  This new term more accurately describes its functionality both for erasing a few characters of text, but also for erasing drawings, sounds, and other objects. (Fn-Erase deletes beneath the cursor.)
+|We've replaced the Backspace and Delete Keys with an Erase Key.  This new term more accurately describes its functionality both for erasing a few characters of text, but also for erasing drawings, sounds, and other objects. (Fn-Erase deletes beneath the cursor.)
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 |[[Image:Key_tab.jpg|right]]
-|The Tab key differs little from those on modern keyboards.  Shift-Tab functions as a reverse tab, as visually indicated on the key.
+|The Tab Key differs little from those on modern keyboards.  Shift-Tab functions as a reverse tab, as visually indicated on the key.
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 |colspan="2"|'''Modifier Keys'''
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 |[[Image:Key_ctrl.png|68px|right]]
-|The control key is the primary modifier for keyboard shortcuts on the laptops.  Note that the control key takes the place of the nominally useful caps lock key on the OLPC keyboards. The removal of caps lock was a design decision on the part of the OLPC team, however placement of the control key in its location followed naturally, since this was its original placement prior to the PS/2, and is still widely accepted among many communities.
+|The Control Key is the primary modifier for keyboard shortcuts on the laptops.  Note that the control key takes the place of the nominally useful caps lock key on the OLPC keyboards. The removal of caps lock was a design decision on the part of the OLPC team, however placement of the control key in its location followed naturally, since this was its original placement prior to the PS/2, and is still widely accepted among many communities.
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 |[[Image:Key_shift.jpg|right]]
-|The shift key is used as a modifier for typing capital letters and other "upper" characters.
+|The Shift Key is used as a modifier for typing capital letters and other "upper" characters.
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 |[[Image:Key_alt.png|68px|right]]
-|The alt key is a multipurpose modifier.
+|The Alt Key is a multipurpose modifier. The Alt Key is typically used to provide a related but alternative functionality (often increased scope) to a Control Key. For example, Ctrl-C is copy; Alt-C is copy and erase.
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 |[[Image:Altgr.jpg|right]]
-|The alternate graphics key is used to select the alternate characters printed on the right half of the key caps. The language key (found on the Thai and Arabic keyboards) acts as an Alt Gr Lock, switching the entire keyboard to the alternate characters. In this "locked" state, the Alt Gr key is used to select the Latin characters on the left half of the key caps.
+|The Alternate Graphics Key (alt gr) is used to select the alternate (additional) characters printed on the right half of the key caps. A common use is the Unicode combining characters used for inserting accent characters. (On some keyboards, there are two separate sets of symbols printed, e.g., Thai, Arabic, Urdu, Ethiopic, etc. In these cases, the Language Key, described below, switches the entire keyboard between languages.)
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 |[[Image:Key_arabic.jpg|right]][[Image:Key_thai.jpg|right]]
-|The Arabic and Thai language keys act as an Alt Gr Locks, switching the entire keyboard to the alternate characters. In this "locked" state, the Alt Gr key is used to select the Latin characters on the left half of the key caps.
+|The Language Key, found on keyboards that have both full Latin and a second alphabet, e.g., Arabic, THai, Urdu, Ethiopic, etc., is used to toggle the entire keyboard between alphabets.
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 |[[Image:Key_fn.jpg|right]]