Reserved characters in HTML must be replaced with character entities.
Characters, not present on your keyboard, can also be replaced by entities.
Some characters are reserved in HTML.
If you use the less than (<) or greater than (>) signs in your text, the browser might mix them with tags.
Character entities are used to display reserved characters in HTML.
A character entity looks like this:
To display a less than sign we must write: < or <
|The advantage of using an entity name, instead of a number, is that the name
is easier to remember.
The disadvantage is that browsers may not support all entity names, but the support for numbers is good.
Non Breaking Space
A common character entity used in HTML is the non breaking space ( ).
Remember that browsers will always truncate spaces in HTML pages. If you write 10 spaces in your text, the browser will remove 9 of them. To add real spaces to your text, you can use the character entity.
Some Other Useful HTML Character Entities
|Result||Description||Entity Name||Entity Number|
|non-breaking space|| || |
Entity names are case sensitive.
Combining Diacritical Marks
A diacritical mark is a "glyph" added to a letter.
Some diacritical marks, like grave ( ̀) and acute ( ́) are called accents.
Diacritical marks can appear both above and below a letter, inside a letter, and between two letters.
Diacritical marks can be used in combination with alphanumeric characters, to produce a character that is not present in the character set (encoding) used in the page.
Here are some examples:
You will see more about HTML symbols in the next chapter of this tutorial.
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