HTML STRUCTURE - WHAT ARE WEBPAGES MADE OF? A PRIMER...
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LATEST UPDATE: 3/6/2021, 6:48:43 PM

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A LINE has no defined beginning and no defined end.

A RAY has a defined beginning and no defined end.

A RANGE has a defined beginning and a defined end.


HTML uses RANGES as "CONTAINERS".
They contain text. Even IMAGES in these containers are text(!), e.g. the location and name of the image.

Ranges/Containers can contain other ranges/containers, which in turn can contain text and or other ranges/containers...


Some ranges have no range (0 length), they are POINTS.
These elements are NOT containers, but perform another function on the page, e.g. IMAGES and LINE BREAKS. 



The ranges/containers/elements are marked by pointed brackets. These brackets are called "HTML-Tags".
They are PAIRED as "OPENING" and "CLOSING" tag.


If an HTML element is NOT a container, it has no closing tag. The closing indicator is contained INSIDE the solitary tag.

<the end />



WHAT HTML TAGS ARE THERE AND WHAT DO THEY DO?
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