Before you start trying out any of the material in the following sections, there are five key things about html tags that you need to know:
- Allpage formatting is achieved by using tags. Browsers will ignore any formatting that is not indicated by tags, in particular: tabs, line breaks,multiple spaces. Tabs and multiple spaces are not available in HTML. Line breaks are created by special line break tags.
- All html tags consist of angled brackets containing the tag identifier, e.g. <HR>, the tag which indicates a horizontal rule.
- Some tags are single, others come in pairs. Paired tags (consisting of a start tag and an end tag) enclose the material to which they apply, e.g. <B> is the start tag for a section of bold text, </B> is the end tag, and everything between them will be in bold. End tags always have / before the tag identifier.
- You cannot invent your own tags; you can only use those which are already defined.
- Tags are not case sensitive: <HR> and <hr>, or even <hR>, will all produce a horizontal rule. (However, tags are often typed in upper case, as this makes it easy for a human reader to spot the tags when reading the HTML source for a page.)
If you try out the material in this chapter and it doesn't seem to come out right, experience suggests that in almost every case it will be because you have made a typing error, and not because there's something wrong with your browser. Check the tags carefully, especially the spelling - browsers cannot cope with mis-spelt or missing tags. Check that you have matching start and end tags where required.
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5. Creating the Pages