Is it possible to have prefix in XML namespace with colon?
Something like this
<root xmlns:x:y="...." />
Results may vary depending on your XMl processor.
From the NT-Names definition:
The Namespaces in XML Recommendation [XML Names] assigns a meaning to names
containing colon characters.
Therefore, authors should not use the colon in XML names except for
namespace purposes, but XML processors must accept the colon as a name character.