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No. In creating a link URL MODx simply uses the resource ID supplied to generate the URL; it keeps a list of IDs and aliases in an array that it loads from the site cache on every page request. But to access these or any other values from resources other than the one being processed you need to use some PHP. There are some easy-to-use snippets, such as the GetField snippet.
Thank you sottwell with your very clear explainations.
I will retreive GetField snippet.
May I suggest that this snippet could a default one ?