HTML5 Study notes (<command>,<details>,<dialog>)

<command>
Currently, <command> tags are not supported by mainstream browsers.
Note: Only IE 9 support <command> tags, other previous versions or later versions of IE browser does not support the <command> tag.
Want to know can go to the Novice tutorial view.

<details>
Currently, only Chrome and Safari 6 support <details> tags.
<details> need to work with <summary>,<summary> is also supported only with Chrome and Safari 6.
Example:

<Details><Summary>Copyright 1999-2011.</Summary><P>-by Refsnes Data. All rights Reserved.</P><P>All content and graphics on this web site is the property of the company Refsnes Data.</P></Details>

Results:

Open property (that is, the hidden content is displayed)
<details open> this is possible.

Open Image:

<dialog>
Currently, only Chrome and Safari 6 support <dialog> tags.
<dialog> tags Define a dialog box, confirmation box, or window.

Example:

<TableBorder= "1"><TR><th>January<DialogOpen>This was an open dialog window</Dialog></th><th>February</th><th>March</th></TR><TR><TD>31</TD><TD>28</TD><TD>31</TD></TR></Table>

Results:

It also has an open property.

HTML5 Study notes (<command>,<details>,<dialog>)