The HTML 5 Geolocation API allows you to access the location of the user. For privacy, user agents asks the permission of user before accessing the location details.
The HTML s tag displays text with a line through it. This tag is used to denote text that is no longer accurate or relevant. It should not be used to represent deleted text. To represent deleted text, use del tag.
The HTML var tag (variable) is used to represent variable names. Most browsers display its content in italics.
The HTML fieldset tag is used to group similar items in a web form. The legend tag is used to set the caption for a fieldset.