The advantage is at least to avoid coding
No, it isn't. People still have to learn the syntax and semantics of a domain-specific language to make this work.
There may be good reasons to make a domain-specific language and there may be good reasons to use a DSL instead of Perl, but don't fool yourself into thinking that using a DSL means that people can avoid programming or that you can easily avoid syntactical and semantic mistakes from non-programmers.
If you do pursue this line of thinking, please consider that XML is a terrible thing to inflict upon humans.
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