Re: Marking a textfragment for later reference

[Sietse Brouwer <sbbrouwer@gmail.com>]

Hi Robert,

> So my question: "Why can some identifiers,
> for example of figures, be used for internal
> references and others not?" remains unanswered.

That would be because there are
* names, for creating a named variant of some command
* and labels, which are used for cross-references,
and I think you are calling them both identifiers. (Not sure I'm using
the official terms, or if there are any.)

Some examples below, I hope they'll clarify things. I never had any
problems confusing labels and names myself, so I'm not sure how to
explain what was obvious to me, but perhaps this will help:

Names occur when you're defining things; Labels occur when you're
placing things.

As for why you can't do

\definedelimitedtext[AA]

\startAA[mylabel]
bla
\stopAA

I guess that was never baked in. Probably because quotations are not
really numbered objects, and so not obvious candidates for having
their own labels.

Cheers,

Sietse

%%%%%%% Example: label %%%%%
\placefigure
  [here]
  [fig:myfig] % label: used to refer to the figure
  {caption}{figure}

%%%%%%% Example: command like \startNAME %%%%%
\definedelimitedtext
    [smallquote]  % name
    [style=small]

\startsmallquote % our own named environment
   bla bla bla
\stopsmallquote

%%%%% Example: names and labels %%%%%
\useexternalfigure
    [littlecow]   % define a named picture
    [cow.pdf]
    [width=1cm]

\placefigure
    [here]
    [fig:littlecow]  % a label for the figure float
    {Kleine, kleine koe}
    {\externalfigure[littlecow]} % invoking a named picture


--
Sietse Brouwer -- sbbrouwer@gmail.com -- +31 6 13.456.848
Verlengde Wassenaarseweg 4a -- 2342 BG Oegstgeest -- the Netherlands
MSN: sietse@gawab.com -- ICQ: 341232104


On Tue, Aug 7, 2012 at 11:44 AM, Robert Blackstone
<blackstone.robert@gmail.com> wrote:
>
> On 7 aug. 2012,  Pontus Lurcock <pont@talvi.net>
> wrote
>>
>> On Tue 07 Aug 2012, Robert Blackstone wrote:
>>
>>> Here follows my minimal example. I reasoned that the identifier [topica] might act as a label, or an anchor, or whatever the correct ConTeXt name is, for a reference.
>>> ---------------------------------------------------------------------------
>>>
>>> \definedelimitedtext[topica]
>>> \setupdelimitedtext[topica][left=,right=] %maybe superfluous? I do not need a layout different from the rest of the text.
>>> \starttext
>>>
>>> Some text.
>>>
>>> \starttopica
>>> Some text to explain a certain topic, called topica.
>>> \stoptopica
>>>
>>> Some more text about topica. (See discussion on \at{page}[topica])
>>>
>>> \stoptext
>>>
>>> ---------------------------------------------------------------------------
>>> To avoid any misunderstanding: this is no longer a problem since I have been given excellent advice. But it intrigues me. Why can some identifiers, for example of figures, be used for internal references and others not?
>>
>> In this case, I'd say it's because you're defining a delimited text
>> style which can be used in multiple places. Your document could have
>> five hundred \starttopica...\stoptopica blocks on different pages.
>> A figure identifier, on the other hand, is meant to be unique.
>>
>> Pont
> Hi Pont,
> Thanks for your comment. I realized this. There would of course be only one "\starttopica...\stoptopica block" in my text. If I would like to use delimited texts in this manner for several different topics, I would simply give them different names. Each topic its own name, like [topicb], [topicc], etc. Like you would do if you wanted to use slightly different types of blockquote in your document.
> So my question: "Why can some identifiers, for example of figures, be used for internal references and others not?" remains unanswered.
> Best regards,
> Robert
>
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