The normal QRS axis, like the P wave axis, points downward and to the left within a coordinate between -30 o and +90 o. This axis is said to be deviated to the left (left axis deviation or LAD) if it lies between -30 o and -90 o; and deviated to the right (right axis deviation or RAD) if it lies between +90 o and 180 o.
Schema.org Structured Data. Schema.org (often called Schema) is a specific vocabulary of tags (or microdata) that you can add to your HTML to improve the way your page is represented in SERPs.chema.org (often called Schema) is a specific vocabulary of tags (or microdata) that you can add to your HTML to improve the way your page is represented in SERPs.
XML Schema Definition (XSD) language is the current standard schema language for all XML documents and data. On May 2, 2001, the World Wide Web Consortium (W3C) published XSD in its version 1.0 format.The XML Schema definition language (XSD) enables you to define the structure and data types for XML documents.An XML Schema defines the elements, attributes, and data types that conform to the World Wide Web Consortium (W3C) XML Schema Part 1: Structures Recommendation for the XML Schema Definition Language. type definition for elements that can contain attributes and elements. This data type can contain elements and have attributes. In the remainder of this XSD Starter Kit, we will look at how to get started with XSD.