On a web page, when moving the cursor to an icon, button or a piece of
text, a rectangle slot would automatically appear, in which some text
is there explaining what the web page is about. For instance, moving
the cursor to the top of the IE browser and stop at an icon, a slot
would appear. The text in it would be 'Back to . . .', 'Stop',
'Refresh', and so on. This program is quite popular, actually
everywhere. But I don't know how to do it.
I like to achieve this effect in my web pages. Can anybody tell me
what program I have to learn? Thanks.