The Internet

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To learn to read is to light a fire; every syllable that is spelled out is a spark. ― Victor Hugo

Contents

Hypertext Markup Language HTML

Documents are transmitted around the internet and one way of displaying them is through a browser. Web browsers display documents in many formats, including HTML, XML, XHTML, SVG, and others. Each of these documents lives by different rules and is set up differently. The document type is defined in a Document Type Declaration, or DTD. The DTD tells the browser what rules to follow when displaying the document.


HTML Page Titles

Page titles are examined by search engines to help determine whether a page is relevant, therefore placing it higher in the search results.

In terms of knowledge distribution the ability of the internet ( via browsers and search engines) to misdirect or miss information needs a special understanding.

Google, for example, displays up to 66 characters of the title tag. So keeping the title short but sweet is key.

Displaying Knowledge

Elements

  • <a> Anchor Creates a link to another page or a section of the same document.
  • br Line break Enters a line break or return character.
  • div A section of a page Creates overall areas or logical divisions on a page, such as a heading/menu section, a content area, or a footer.
  • <form> Web form Creates a web form to accept user input.
  • h1 through h6 Heading Creates a container for a heading, such as heading text.
  • hr Hard rule Creates a horizontal line.
  • <img> Image A container for an image.
  • <input> Input An element to accept user input.
  • <link> Resource link Links to a resource for the page; not to be confused with an anchor element.
  • p A paragraph in a page Creates textual paragraphs or other areas and containers for text.
  • <script> A script tag Denotes a web script or program. Also frequently found in the head section.
  • Span Creates a container for an element. Frequently used in conjunction with styling information.
  • <img src="images/books_mysqlbible.gif">

Semantic Markup

A primary benefit of semantic markup is that search engines can find the information they need.

CSS Impacts on Knowledge Transfer

  • Limitations of Cascading Style Sheets (CSS)

CSS has limitations that may impact on knowledge transfer.

Not all web browsers support CSS in exactly the same way.

Layout may be interpreted in a slightly different manner, placing items higher or lower or in a different place entirely.

Older browsers don’t support newer versions of CSS, specifically the CSS3 specification. This means that those browsers can’t use some of the features of the CSS3 specification. To get around this, you can use older versions of the specification that are more widely supported by those older browsers.

By testing in other browsers, you can see how the site will look in those browsers and correct layout issues prior to deploying the site to the Internet.



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