| ecom | These types of web sites are those devoted solely to retail sales. |
| js | (JavaScript) A programming language that makes it possible to dynamically insert content, links, meta data, or other elements, on websites. JavaScript can potentially make it difficult for search engine bots to crawl and index webpages and increase the time it takes for webpage to load for users. |
| macro opacity | Noun phrase. The measurement of group-level opacity (q.v.). |
| login forms | Refers to pages that require login authentication before a visitor can access the content. |
| header tags | An HTML element used to designate headings on your page. |
