The Arcade developer docs mention the "Alias" profile:
The alias profile allows the map author to write an expression to evaluate a numeric value and return a text alias representing that value.
When the alias is needed, the script will be evaluated. It will be passed the value for which an alias is desired. It is expected that the script returns a text value, comprising the alias to be shown.
Globals
Variable Name Type Description $value | Number | The numeric value for which a text alias is desired. |
Return types
Text
It's not clear to me when/why the Alias profile would be used.
What would be an example use case for Alias?
Edit:
This post is a duplicate of: What/where is the Alias profile for Arcade?