Add info about Backspace and Delete to the FAQ

Here is a modest attempt at cleaning it up a little bit. I changed a
few phrases that seemed awkward, but I think the content is the same.

--
Wolfgang Corcoran-Mathe

Signed-off-by: Roberto E. Vargas Caballero <k0ga@shike2.com>

1 files changed, 43 insertions, 44 deletions

diff --git a/FAQ b/FAQ
index 2ee5ec7..a47c024 100644
--- a/FAQ
+++ b/FAQ
@@ -104,54 +104,53 @@ This is an issue that was discussed in suckless mailing list
 <http://lists.suckless.org/dev/1404/20697.html>:
 
         Well, I am going to comment why I want to change the behaviour
-        of this key. When ascii was defined in 1968 communication
-        with computers were done using punched cards, or hardcopy
-        terminals (basically a typewritter machine connected with
-        the computer using a serial port). Due to this, ascii defines
-        DELETE as 7F, because in the puched cards, it means all the
-        holes of the card punched, so it is a kind of 'phisical
-        delete'. In the same way, BACKSPACE key was a non destructive
-        back space, as in typewriter machines.  So, if you wanted
-        to delete a character, you had to BACKSPACE and then DELETE.
-        Other use of BACKSPACE was accented characters, for example
-        'a BACKSPACE `'. The VT100 had no BACKSPACE key, it was
-        generated using the CONTROL key as another control character
-        (CONTROL key sets to 0 b7 b6 b5, so it converts H (code
-        0x48) into BACKSPACE (code 0x08)), but it had a DELETE key
-        in a similar position where BACKSPACE key is located today
-        in common PC keyboards. All the terminal emulators emulated
-        correctly the difference between these keys, and backspace
-        key generated a BACKSPACE (^H) and delete key generated a
-        DELETE (^?).
-
-        But the problem arised when Linus Torvald wrote Linux, and
-        he did that the virtual terminal (the terminal emulator
-        integrated in the kernel) returns a DELETE when backspace
-        was pressed, due to the fact of the key in that position
-        in VT100 was a delete key. This created a lot of problems
-        (you can see it in [1] and [2]), and how Linux became the
-        king, a lot of terminal emulators today generate a DELETE
-        when backspace key is pressed in order to avoid problems
-        with linux. It causes that the only way of generating a
-        BACKSPACE in these systems is using CONTROL + H. I also
-        think that emacs had an important point here because CONTROL
-        + H prefix is used in emacs in some commands (help commands).
+        of this key. When ASCII was defined in 1968, communication
+        with computers was done using punched cards, or hardcopy
+        terminals (basically a typewriter machine connected with the
+        computer using a serial port).  ASCII defines DELETE as 7F,
+        because, in punched-card terms, it means all the holes of the
+        card punched; it is thus a kind of 'physical delete'. In the
+        same way, the BACKSPACE key was a non-destructive backspace,
+        as on a typewriter.  So, if you wanted to delete a character,
+        you had to BACKSPACE and then DELETE.  Another use of BACKSPACE
+        was to type accented characters, for example 'a BACKSPACE `'.
+        The VT100 had no BACKSPACE key; it was generated using the
+        CONTROL key as another control character (CONTROL key sets to
+        0 b7 b6 b5, so it converts H (code 0x48) into BACKSPACE (code
+        0x08)), but it had a DELETE key in a similar position where
+        the BACKSPACE key is located today on common PC keyboards.
+        All the terminal emulators emulated the difference between
+        these keys correctly: the backspace key generated a BACKSPACE
+        (^H) and delete key generated a DELETE (^?).
+
+        But a problem arose when Linus Torvalds wrote Linux. Unlike
+        earlier terminals, the Linux virtual terminal (the terminal
+        emulator integrated in the kernel) returned a DELETE when
+        backspace was pressed, due to the VT100 having a DELETE key in
+        the same position.  This created a lot of problems (see [1]
+        and [2]). Since Linux has become the king, a lot of terminal
+        emulators today generate a DELETE when the backspace key is
+        pressed in order to avoid problems with Linux. The result is
+        that the only way of generating a BACKSPACE on these systems
+        is by using CONTROL + H. (I also think that emacs had an
+        important point here because the CONTROL + H prefix is used
+        in emacs in some commands (help commands).)
 
         From point of view of the kernel, you can change the key
         for deleting a previous character with stty erase. When you
-        connect a real terminal into a machine you describe the
-        type of terminal, so getty configure the correct value of
-        stty erase for this terminal, but in the case of terminal
-        emulators you don't have any getty that can set the correct
+        connect a real terminal into a machine you describe the type
+        of terminal, so getty configures the correct value of stty
+        erase for this terminal. In the case of terminal emulators,
+        however, you don't have any getty that can set the correct
         value of stty erase, so you always get the default value.
-        So it means that in case of changing the value of the
-        backspace keyboard, you have to add a 'stty erase ^H' into
-        your profile. Of course, other solution can be that st
-        itself modify the value of stty erase.  I have usually the
-        inverse problem, when I connect with non Unix machines, and
-        I have to press control + h to get a BACKSPACE, or the
-        inverse, when a user connects to my unix machines from a
-        different system with a correct backspace key.
+        For this reason, it is necessary to add 'stty erase ^H' to your
+        profile if you have changed the value of the backspace key.
+        Of course, another solution is for st itself to modify the
+        value of stty erase.  I usually have the inverse problem:
+        when I connect to non-Unix machines, I have to press CONTROL +
+        h to get a BACKSPACE. The inverse problem occurs when a user
+        connects to my Unix machines from a different system with a
+        correct backspace key.
 
         [1] http://www.ibb.net/~anne/keyboard.html
         [2] http://www.tldp.org/HOWTO/Keyboard-and-Console-HOWTO-5.html