understanding elements and \blank

understanding elements and \blank

[Pablo Rodriguez]

Dear list,

if I’m not wrong, elements are defined and configured in ConTeXt with
\defineelement and \setupelement in the preamble of the document. Then
they can be invoked using the identifier as a command.

  \definemargindata[MyMarginData][location=outer]
  \starttext
  \MyMarginData{Zapf}\input zapf
  \stoptext

My question is; why are blank elements different?

  \defineblank[MyBlank][10*big]
  \starttext
  \input zapf

  \blank[MyBlank]

  \input zapf
  \stoptext

Sorry for the basic question, but I’m trying to understand the reason
why to explain it to others.

Are there other elements that cannot be invoked with \identifier?

Many thanks for your help,


Pablo
-- 
http://www.ousia.tk
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Re: understanding elements and \blank

[Hans Hagen]

On 6/14/2014 11:28 AM, Pablo Rodriguez wrote:
> Dear list,
>
> if I’m not wrong, elements are defined and configured in ConTeXt with
> \defineelement and \setupelement in the preamble of the document. Then
> they can be invoked using the identifier as a command.
>
>    \definemargindata[MyMarginData][location=outer]
>    \starttext
>    \MyMarginData{Zapf}\input zapf
>    \stoptext
>
> My question is; why are blank elements different?
>
>    \defineblank[MyBlank][10*big]
>    \starttext
>    \input zapf
>
>    \blank[MyBlank]
>
>    \input zapf
>    \stoptext
>
> Sorry for the basic question, but I’m trying to understand the reason
> why to explain it to others.
>
> Are there other elements that cannot be invoked with \identifier?

in retrospect one can wonder if we should have \MyMarginData at all and 
not \invoke{MyMarginData} ...

it's all about potential clashes in names

Hans


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___________________________________________________________________________________

Re: understanding elements and \blank

[Pablo Rodriguez]

On 06/15/2014 03:35 PM, Hans Hagen wrote:
> On 6/14/2014 11:28 AM, Pablo Rodriguez wrote:
>>
>> if I’m not wrong, elements are defined and configured in ConTeXt with
>> \defineelement and \setupelement in the preamble of the document. Then
>> they can be invoked using the identifier as a command.
>> [...]
>> My question is; why are blank elements different?
> 
> in retrospect one can wonder if we should have \MyMarginData at all and 
> not \invoke{MyMarginData} ...
> 
> it's all about potential clashes in names

Many thanks for your reply, Hans.


Pablo
-- 
http://www.ousia.tk
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If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: understanding elements and \blank

[Wolfgang Schuster]

Am 15.06.2014 um 15:35 schrieb Hans Hagen <pragma@wxs.nl>:

> On 6/14/2014 11:28 AM, Pablo Rodriguez wrote:
>> Dear list,
>> 
>> if I’m not wrong, elements are defined and configured in ConTeXt with
>> \defineelement and \setupelement in the preamble of the document. Then
>> they can be invoked using the identifier as a command.
>> 
>>   \definemargindata[MyMarginData][location=outer]
>>   \starttext
>>   \MyMarginData{Zapf}\input zapf
>>   \stoptext
>> 
>> My question is; why are blank elements different?
>> 
>>   \defineblank[MyBlank][10*big]
>>   \starttext
>>   \input zapf
>> 
>>   \blank[MyBlank]
>> 
>>   \input zapf
>>   \stoptext
>> 
>> Sorry for the basic question, but I’m trying to understand the reason
>> why to explain it to others.
>> 
>> Are there other elements that cannot be invoked with \identifier?
> 
> in retrospect one can wonder if we should have \MyMarginData at all and not \invoke{MyMarginData} …

The second method is already possible for some commands, e.g.

  - \margindata[inmargin]{…} and
  - \startnamedsection[chapter]

and has only to be extended.

Wolfgang
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