Question about [Live] suffix on Scripting Documentation page

The proper way to do this is the answer given at:

@Billy_Yank is using $in to check if the value you are looking for is included in the list. Even cleaner would be using $inmulti:

$if($and($inmulti(%releasetype%,compilation),$not($in(%album%,[Compilation]))),$set(album,%album% [Compilation]))
$if($and($inmulti(%releasetype%,live),$not($in(%album%,[Live]))),$set(album,%album% [Live]))

It inverses a condition. So the following prints “[SINGLE]” if %releasetype% does contain single:

$if($inmulti(%releasetype%,single),[SINGLE])

And this prints “[NOT SINGLE]” if %releasetype% does not contain single:

$if($not($inmulti(%releasetype%),single),[NOT SINGLE])
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