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.
Part of the Search engine optimization (SEO) glossary: A meta description tag is a snippet of HTML code in a web page header that summarizes the content that is on the web page. The meta description is usually placed after the title tag and before the meta keywords tag.When optimizing a web page for search engines (SEO), it is considered a best practice to use meta description tags.Before Google and other search engines changed how much importance they place on meta description tags, the keywords in a meta description could influence ranking on a search engine results page (SERP).hen optimizing a web page for search engines (SEO), it is considered a best practice to use meta description tags. Before Google and other search engines changed how much importance they place on meta description tags, the keywords in a meta description could influence ranking on a search engine results page (SERP).