   [chapter]
   [beforesection={\pageinjection[chapter:start]},
    insidesection={\pageinjection[chapter:insert][name=\structureuservariable{image}][name=\structureuservariable{scale}]}]

\starttext

\startchapter [title={My title}] [image=Chapter1.jpg][scale=500]
\setups [pageinjection:chapter:image]
\dorecurse{7}{\samplefile{lorem}}
\stopchapter
On Thu, 10 Mar 2022, jbf via ntg-context wrote:

Am endeavouring to explore Wolfgang's very 'elegant' solution to this 
facing page challenge. The exploration has included a look at 
base/mkxl/page-inj.mklx (thanks Sreeram for reminding me of this) where 
I see immediately that the approach is experimental and where it says 
also that 'probably more alternatives will be added'. I wonder if that 
last phrase also includes the ability to manipulate the image(s) either 
generally or in individual cases?

So, for example., say I need (and in fact I do!) to change some aspect 
of individual images, e.g. I might want to scale=500, or fiddle with 
width/height of a particular image. At the moment I cannot see a way of 
doing this for each image. I wondered if the commented out setups in the 
response to this question might be a clue, but so far haven't been able 
to get that to have any effect.

Couldn't you just pass scale as a key-value parameter, similar to how `name` is passed in Wolfgang's solution?

Aditya
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