The same is true with the capability 'platform'. It is supposed to supersede the setting 'platform'. But I didn't find the capability 'platform' in any of the ECF files provided in the EiffelStudio distribution. They all use the setting 'platform'. And when I try to use the capability 'platform' in my ECF file I get this error:

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Error code: VD00

General configuration parsing error.
What to do: fix the configuration file.

Parse error (XML syntax)  in C:\DriveE\gobo\gobo.dev\library\tools\test\eiffel\ecf\eadq\test4\system.ecf (line 12, column 27): Invalid tag/tag position 'platform'
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So, if the capabilities 'code' and 'platform' are not supported and the old settings are to be used, I think that the file:

https://www.eiffel.com/developers/xml/configuration-1-16-0.xsd

should be fixed accordingly.