OT1
(Donald Knuth's 7-bit encoding, which
has been used during most of TEX's lifetime) and T1
(the new
8-bit `Cork' encoding).
LATEX 2.09 only supported the OT1
encoding, whereas LATEX2e has
support for both OT1
and T1
built-in. The next section will
cover the new commands which are available if you have T1
-encoded
fonts. This section describes new commands which are available in
all encodings.
Most of these commands provide characters which were available in
LATEX 2.09 already. For example \textemdash
gives an `em dash',
which was available in LATEX 2.09 by typing ---
. However, some
fonts (for example a Greek font) may not have the ---
ligature,
but you will still be able to access an em dash by typing
\textemdash
.
\r{<text>}
This command gives a `ring' accent, for example `o' can be typed
\r{o}
.
\SS
This command produces a German `SS', that is a capital `ß'. This letter can hyphenate differently from `SS', so is needed for entering all-caps German.
\textcircled{<text>}
This command is used to build `circled characters' such as
\copyright
. For example \textcircled{a}
produces
.
\textcompwordmark
This command is used to separate letters which would normally
ligature. For example `fi' is produced with
f\textcompwordmark i
. Note that the `f' and `i' have not
ligatured to produce `fi'. This is rarely useful in English
(`shelfful' is a rare example of where it might be
used) but is used in languages such as German.
\textvisiblespace
This command produces a `visible space' character ` '. This is sometimes used in computer listings, for example `type hello world'.
\textemdash
\textendash
\textexclamdown
\textquestiondown
\textquotedblleft
\textquotedblright
\textquoteleft
\textquoteright
These commands produce characters which would otherwise be accessed via ligatures:
ligature | character | command |
--- |
-- | \textemdash |
-- |
- | \textendash |
!` |
¡ | \textexclamdown |
?` |
¿ | \textquestiondown |
`` |
`` | \textquotedblleft |
'' |
'' | \textquotedblright |
` |
` | \textquoteleft |
' |
' | \textquoteright |
\textbullet
\textperiodcentered
These commands allow access to characters which were previously only available in math mode:
math command | character | text command |
\bullet |
\textbullet |
|
\cdot |
\textperiodcentered |
\textbackslash
\textbar
\textless
\textgreater
These commands allow access to ASCII characters which were only available in verbatim or math mode:
math command | character | text command |
\backslash |
\textbackslash |
|
\mid |
\textbar |
|
<< |
< | \textless |
>> |
> | \textgreater |
\textasciicircum
\textasciitilde
These commands allow access to ASCII characters which were previously only available in verbatim:
verbatim | text command |
^ |
\textasciicircum |
~ |
\textasciitilde |
\textregistered
\texttrademark
These commands provide the `registered trademark' (R) and `trademark' (TM) symbols.