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Setup commands
79
35
35
Setup commands
Global commands are placed in the setup area of your input file, before \starttext. In
appendixDthereis acompleteoverview oftheavailablecommandsandtheir parameters.
The set up commands all have the same structure. They look something like:
\setupparagraphs[.1.][.2.][..,..=..,..]
.1.
name
.2.
number each
style
normal bold slanted boldslanted type cap small... command
width
dimension
height
dimension
align
left right middle breedte
tolerance
verystrict strict tolerant
verytolerant
distance
dimension
before
command
after
command
inner
command
command
command
rule
on off
Aset up command consistof a moreor less logical name and a number of bracketpairs.
Bracket pairs may be optional and in that case the [] are typeset slanted []. In the
definition the bracket pairs may contain:
\setupacommand[.1.][.2.][..,..=..,..]
The commas indicate that a list of parameters can be enclosed. In the options list fol-
lowing the definition, the .1. and .2. show the possible options that can be set in the
first and second bracket pair respectively. The parameters and their possible values are
placed in the third bracket pair.
The default options and parameter values are underlined. Furthermore you will notice
that some values are typeset in a slanted way: section, name, dimension, number, com-
mand and text. This indicates that you can set the value yourself.
section
asection name like chapter, paragraph etc.
name
an identifier (logical name)
dimension
an dimension with a unit in cm, pt, em, ex, sp or in
number
an integer
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Defining commands / macros
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36
command
acommand
text
text
36
Defining commands / macros
CONT
E
XT
is a set of macros based on
T
E
X
.
T
E
X
is a programming language as well as a ty-
pographical system. This means that you can do the programming yourself if you need
that kind of flexability.
You can define a new command with:
\define[.1.]\command{.2.}
Without any further explanation this command is used in the following example.
You may have a well illustrated document and you are tired of typing:
\placefigure
[here,force]
[fig:logical name]
{Caption.}
{\externalfigure[filename][width=5cm]}
You could define your own command with a few variables like:
 logical name
 caption
 file name
Your command definition and call could look something like this:
\define[3]\myputfigure
{\placefigure
[here,force][fig:#1]
{#2}{\externalfigure[#3][width=5cm]}}
\myputfigure{lion}{The Dutch lion is a sentry.}{hass13g}
Between brackets [3] indicates that you want to use three variables #1, #2 and #3. In
thecommand call\myputfigureyouhave toinputthese variables betweencurlybraces.
The result would be:
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Defining commands / macros
81
36
Figure 36.1 The Dutch lion is a sentry.
Very sophisticated commands can be programmed but this is left toyour own inventive-
ness.
Inaddition todefining commands you canalso define\start  \stopcommandpairs.
\definestartstop[...][..,..=..,..]
For example:
\definestartstop
[stars]
[commands={\inleft{\hbox to \leftmarginwidth
{\leaders\hbox{$\star$}\hfill}}},
before=\blank,
after=\blank]
\startstars
{\em Hasselter Juffers} are sweet cookies but the name is no
coincidence. On July 21 in 1233 the {\em Zwartewaterklooster}
(Blackwater Monastery) was founded. The monastery was meant
for unmarried girls and women belonging to the nobility of
Hasselt. These girls and women were called {\em juffers}.
\stopstars
This will result in:
HasselterJuffers aresweet cookies butthenameis nocoincidence. OnJuly21in 1233the
???????
Zwartewaterklooster (Blackwater Monastery)wasfounded. Themonasterywas meantfor
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Miscellaneous
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37
unmarried girls and women belonging to the nobility of Hasselt. Thesegirls and women
were called juffers.
37
Miscellaneous
37.1 Floating blocks
Ablock in
CONT
E
XT
is atextelement, for example atableor afigurethatyou canprocess in
aspecial way. You havealready seen the use of\placefigure and \placetable. These
are both examples of floating blocks. The floating mechanism is described in chapter 10
and 11.
You can define these kind of blocks yourself with:
\definefloat[.1.][.2.]
The bracket pairs are used for the name in singular and plural form. For example:
\definefloat[intermezzo][intermezzi]
Now the following commands are available:
\placeintermezzo[][]{}{}
\startintermezzotext ... \stopintermezzotext
\placelistofintermezzi
\completelistofintermezzi
The newly defined floating block can be set up with:
\setupfloat[...][..,..=..,..]
You can set up the layout of floating blocks with:
\setupfloats[..,..=..,..]
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Miscellaneous
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37
You can set up the numbering and the labels with:
\setupcaption[...][..,..=..,..]
These commands are typed in the set up area of your input file and will have a global
effect on all floating blocks.
\setupfloats[location=middle]
\setupcaption[location=bottom,headstyle=boldslanted]
\placeintermezzo{An intermezzo.}
\startframedtext
At the beginning of this century there was a tramline from Zwolle to
Blokzijl via Hasselt. Other means of transport became more important
and just before the second world war the tramline was stopped.
Nowadays such a tramline would have been very profitable.
\stopframedtext
At the beginning of this century there was a tramline from
Zwolle to Blokzijl via Hasselt. Other means of transport be-
came more important and just before the second world war
the tramline was stopped. Nowadays such a tramline would
have been very profitable.
Intermezzo 37.1 An intermezzo.
37.2 Text blocks
Another typeof block is a text block. A textblock for exampleis oneor moreparagraphs
you want to use several times.
You have to define a text block with:
\defineblock[...]
You give the name of text blocks between brackets; you can also type a list of names if
you separate them by commas. For example you can define:
\defineblock[dutch]
After defining the text block the following command is available:
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Miscellaneous
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37
\begindutch ... \enddutch
Text blocks are manipulated with:
\hideblocks[..,.1.,..][..,.2.,..]
\useblocks[..,.1.,..][..,.2.,..]
\keepblocks[..,.1.,..][..,.2.,..]
\selectblocks[..,.1.,..][..,.2.,..][..=..]
An example shows the possibilities of text blocks.
\defineblock[dutch,english]
\hideblocks[dutch,english]
\beginenglish[dedemsvaart-e]
After 1810 the Dedemsvaart brought some prosperity to Hasselt. All
ships went through the canals of Hasselt and the shops on both sides
of the canals prospered.
\endenglish
\begindutch[dedemsvaart-d]
Sinds 1810 veroorzaakte de Dedemsvaart enige welvaart in Hasselt.
Alle schepen voeren door de grachten en de winkels aan weerszijden
van de gracht floreerden.
\enddutch
\useblocks[english][dedemsvaart-e]
After 1810 theDedemsvaartbroughtsomeprosperity toHasselt. All ships wentthrough
the canals of Hasselt and the shops on both sides of the canals prospered.
Ifyoucontinuedefiningtheseblocks youcouldmakeabilingualmanual. For thatpurpose
it is also possible to store the text blocks in an external file. This would look something
like this:
\setupblock[dutch][file=store-d]
Miscellaneous
85
37
The Dutch text blocks are stored in store-d.tex and the text fragments can be called
upon by their logical names.
37.3 Storing text for later use
You can store information temporarily for future use in your document with:
\startbuffer[...] ... \stopbuffer
For example:
\startbuffer[visit]
If you want to see what Hasselt has in store you should come and visit it
some time.
\stopbuffer
\getbuffer[visit]
With \getbuffer[visit] you recall the stored text. The logical name is optional. With
\typebuffer[visit] you get back the typeset version of the content of the buffer.
Buffers are set up with:
\setupbuffer[...][..,..=..,..]
37.4 Hiding text
Text can be hidden with:
\starthiding ... \stophiding
The text in between will not be processed.
37.5 Lines
There are many comands to draw lines. For a single line you type:
\hairline
Miscellaneous
86
37
or:
\thinrule
For more lines you type:
\thinrules[..=..]
Text in combination with lines is also possible:
Hasselt – Amsterdam
Ifyoudrawa straightlinefrom HasselttoAmsterdam you would havetocover adistance
of almost 145 km.
If you draw two straight lines from Hasselt to Amsterdam you would have to cover a
distance of almost 290 km.
Amsterdam
Hasselt
\starttextrule{Hasselt -- Amsterdam}
If you draw a straight line from Hasselt to Amsterdam you would have
to cover a distance of almost 145 \Kilo \Meter.
\stoptextrule
If you draw two straight lines from Hasselt to Amsterdam you would
have to cover a distance of almost 290 \Kilo \Meter.
Amsterdam \thinrules[n=3] Hasselt
You always have to be careful in drawing lines. Empty lines around \thinrules must
not be forgotten and the vertical spacing is always a point of concern.
You can set up line spacing with:
\setupthinrules[..=..]
There are a few complementary commands that might be very useful.
\setupfillinrules[..,..=..,..]
Miscellaneous
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37
\setupfillinlines[..,..=..,..]
These commands are introduced in the examples below:
\setupfillinrules[width=2cm]
\setupfillinlines[width=3cm]
\fillinrules[n=1]{\bf name}
\fillinrules[n=3]{\bf adress}
\fillinline{Can you please state the \underbar{number} of cars used
in your family.} \par
Strike out any word \overstrikes{in this text}\periods[18]
This will become:
name
adress
Can you please state the number
of cars used in your family.
Strike out any word in
this
text
.. . .. . .. .. . .. . .. . .
These commands are used in questionaires. Text that is struck out or underlined will
not be hyphenated.
37.6 Super- and subscript in text
Itis very easy toput
superscript
and
subscript
in your text. What would you call this version
subscript
superscript
?It looks strange!
This ugly text was made with \low{}, \high{} and \lohi{}{}. The text was placed
between the curly braces.
37.7 Date
You can introduce the system date in your text with:
\currentdate
37.8 Positioning
Sometimes you feel theneed to position text on a pageor within a text element. You can
position text with:
Miscellaneous
88
37
\position(.1.,.2.){.3.}
Theparenthesis enclose thex;y coordinates, the curly braces enclose the textyou want
to position.
You can set up the x;y axes with:
\setuppositioning[..,..=..,..]
You can use units and scaling factors. An example will illustrate \position.
\def\dicefive%
{\framed
[width=42pt,height=42pt,offset=0pt]
{\setuppositioning
[unit=pt,factor=12,xoffset=-11pt,yoffset=-8pt]%
\startpositioning
\position(1,1){$\bullet$}%
\position(1,3){$\bullet$}%
\position(2,2){$\bullet$}%
\position(3,1){$\bullet$}%
\position(3,3){$\bullet$}%
\stoppositioning}}
\placefigure{This is five.}{\dicefive}
This is a rather complex example but it would look something like this.
Figure 37.1 This is five.
37.9 Rotating text, figures and tables
In a number of cases you would like to rotate text or figures. You can rotate text and
objects with:
\rotate[..,..=..,..]{...}
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