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| Note: URLs have strict syntactic rules and do not support blank spaces. To embed characters that are not included in the ASCII subset supported by URLs, you need to percent encode the character in question. The byte x20 represents a blank in ASCII encoding hence the percent encoding value is %20. For more Percent Encoded values refer to HTML URL Encoding Reference. |
When the mailto attribute is used the browser knows to open the default email program and sets the address and other parameters as specified in the link.
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