HTML forms part of a large more powerful mark-up language called SGML. In an effort to harness  the power of SGML  without loosing the simplicity of HTML, the W3C has developed Extensible Markup Language, or XML that can be used to create your own mark-up languages, specifically suited to your topic.  SWITCHING BETWEEN WINDOWS While working on browsers, it is easy to switch between various windows software. This is so since both the commonly used browsers are windows based. For switching between one software or browser to another we simply use the option of pressing . This is simple. Else you can minimize one application to see another. The choice is yours.

HTML COMMAND TAGS
For all practical purposes, HTML tags are written within the less than  and greater than signs, also known as angle brackets. These signify the opening and closing of the commands. The Command for opening and closing are the same but for one exception the closing one has a attached to it.  QUOTATION MARKS Mostly all values should be enclosed in straight marks. However you can omit the quote marks if the value only contains letters digits.There is no restriction on the number of spaces given by you. HTML always finds out standard ASCII set characters can be used it is the concept of entering p tag while being of each para. Each new para whouldbegain on new line. It goes without saying that the would always have to be floowedthe space in the browser each browser has browser has its concept which you will learn later. Beside the usual ASCII set of characters, HTML supports other character too. The standard ASCII set characters can be used as it is and will be displayed as it is in the browser. There are four symbols that have special meaning is HTML documents. These are four symbols double quotation mark and ampersand. If you simply type them in your HTML documents, the browser may attempt to interpret them. To show the symbol themselves, use a name or number code.

TAGS WITH AUTOMATIC LINE BREAKS
Block-level tags generally include automatic, logical line breaks. For example, you don’t need to use a new paragraph tag after a header, since header automatically includes a line break. In fact, you only need to insert a new paragraph tag if you’re using the tag to apply styles. Some common block level tags are P, H1, BR, UL and TABLE. Inline tags that affect only begin on a new line some common inline tags are EM, B, and IMG. Attribute can have values. In some cases, you must pick a value from small group if choices. For example, the CLEAR attribute for the BR tag can take values of left, right, or all. Other attribute are stricter about the type of values they accept. For example, the HSPACE attribute of the IMG tag will accept only integers as its value, and the SRC attribute of the IMG tag will only accept URLs for its values.