[NTG-context] Questions on \definition

[Wolfgang Schuster]

Am 18.01.2012 um 23:39 schrieb Kip Warner:

> On Wed, 2012-01-18 at 09:26 +0100, Wolfgang Schuster wrote:
>> Am 18.01.2012 um 02:47 schrieb Kip Warner:
>> 
>>> Ah, so \setupdescriptions inherits the default values of
>>> \definedescription?
>> 
>> WIth \definedescription you create a new command (e.g. \definition) and environment (e.g. \startdefinition  \stopdefinition).
>> 
>> With \setupdescriptions you can afterwards change the values of the previous defined command/environment.
>> 
>> Each new created command has always default values for the location, style and color of the title etc. which be either changed when you create the command (\definedescription[][..,.=.,..]) or afterwards (\setupdescriptions[][..,.=.,..]).
>> 
>> Wolfgang
> 
> Thanks Wolfgang. I kind of understand. But when you say "create a new
> command", how does ConTeXt know what the command does?

The following is only a simplified explanation.

When you define a new command with \definedescription, e.g. \definedescription[definition] you get the commands

    \definition

and

   \startdefinition

Both are only shortcuts for \dodescription[definition] and \dostartdescription[definition], as you can see the internal command tells context that it’s dealing with a description and “definition” is only the name of the instance.

Wolfgang