You are right Yuri, I added your comment to the wiki page concerning setupinterlinespace:
	http://wiki.contextgarden.net/Command/setupinterlinespace

Best regards: OK

On 27 Jul 2014, at 16:16, Yuri Teixeira <yuriteixeira235@gmail.com> wrote:

> Thank you, this is really what I wanted. I found the source of my confusion too: \setupinterlinespace is local inside \start-stopnarrower
> 
> \setupinterlinespace[5] % this has no effect before \starttext
> 
> \starttext
> \input tufte % this is default small, not 5
> \setupinterlinespace[big]
> \input tufte % this is big
> 
> \startnarrower[left]
> \setupinterlinespace[small]
> \input tufte % this is small
> \stopnarrower
> 
> \input tufte % this is big again
> \stoptext
> 
> 
> 2014-07-27 5:51 GMT-03:00 Otared Kavian <otared@gmail.com>:
> Hi,
> 
> Have a look at the following wiki page:
> 	http://wiki.contextgarden.net/setuplocalinterlinespace
> 
> It may help you achieve what you want to do.
> 
> Best regards: OK
> 
> On 27 Jul 2014, at 04:06, Yuri Teixeira <yuriteixeira235@gmail.com> wrote:
> 
>> Hello, From command/setuphead I inferred this should work to set linespace to 1.5 within the chapter/section but it doesn't. Should it? I read on \setupinterlinespace and it's resetting mechanic but thought the parameter in setuphead would work. Also, I checked and this parameter is not mentioned in the manual, so maybe it does not exist.
>> 
>> \setuphead[chapter][interlinespace=big]
>> 
>> \starttext
>> \chapter{Some title}
>> Lines with 1.5 space? \input tufte
>> 
>> \startchapter[title={Some title}]
>> Try again? \input tufte
>> \stopchapter
>> 
>> \startchapter[title={Some title}]
>> \setupinterlinespace[big]
>> Now it works. \input tufte
>> \stopchapter
>> 
>> \startchapter[title={Some title}]
>> But it "leaks" out of the previous start-stopchapter. \input tufte
>> \stopchapter
>> \stoptext
>> 
>> Thank you for your attention,
>> YT
>> ___________________________________________________________________________________
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>> 
>> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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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
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 
> ___________________________________________________________________________________
> 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
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : http://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________