the colon symbol is a "namespace" delimiter in XML.
if you want to create a root element like dmm:Production_Order_Confirmations
you must first define what the "dmm" namespace prefix stands for.
the identifier should be a globally unique string, by convention a URL.
(it doesn't have to be a real URL, it's just a convenient way to define unique
string)
e.g.
$root:=DOM Create XML
Ref("dmm:Production_Order_Confirmations";"http://www.my-company.com/2018/dmm";)
in the example above, the default namespace becomes "dmm" instead of "xml".
$e:=DOM Find XML element($root;"Production_Order_Confirmations")
$e:=DOM Find XML element($root;"dmm:Production_Order_Confirmations")
both are valid references.
you might have not thought about it, but every element/attribute has the
namespace prefix "xml".
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