The find() operator can be used to run a query, and produces a list of Paths ($Path data). Being a list it is thus not de-duped like an agent's results.
It is important to note this method does not use an agent query but instead its output must be passed to a list attribute or formatted into a string. Thus matches cannot be seen in a Map or Outline view as with an agent. The most likely form of use is thus as a Rule in a note (though an agent Rule will work just as well).
Thus for note 'Test', this will return a list of the paths to each alias of Test:
find($IsAlias & $Name=="Test")
Want the aliases of all notes whose name contains the string "Test"?
find($IsAlias & $Name.contains("Test"))
The above will match names like "Test", "My Test" as well a "Tester" but not "Intestate". By using icontains() for case insensitive matching, "intestate" would be found.
find($IsAlias & $Name.icontains("Test"))
Want to exclude aliases that have 'Exam' in their path?
find(!$Path.contains("Exam") & $IsAlias & $Name.contains("Test"))
Want the original find to exclude aliases that are agents' contents?
find($IsAlias & $Name.contains("Test") & !$AgentQuery(parent))
Want to display the resulting list as line-by-line entries in $Text?
$Text = find($IsAlias & $Name.contains("Test")).format("\n")