The term *mtr* occurs in indexes or keywords of following Zvon materials:

- XML Elements
- Mathematical Markup Language (MathML) Version 2.0 :
**mtr**[*Elements*]an XML application for describing mathematical notation and capturing both its structure and content - External resources
*MathML Test Suite 2.0*http://www.w3.org*Mathematical Markup Language (MathML) Version 2.0*http://www.w3.org

Zvon keyword: *mtr*

starts with
contains
(at least 3 characters needed)