Computer Keyboard Symbols Pictures

How do you type “pictures” on your computer?
This may be a little confusing but bare with me here. You know how on some people’s signatures for their email, for example, there is a “picture” made of symbols on the keyboard? Like, say I wanted to make a bee. I would use a lot of _, /, ;, you know? Can you at least tell me what they are called and if I can look them up on Google??? Please help!!! ^.^
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maybe you can google sig lines or better yet, ascii art
early days of computers had so much ascii (no photos or html yet)
http://images.google.com/images?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=uXd&q=ascii+art&um=1&ie=UTF-8
A shadowy figure intent on world domination. No one knows whether bunny is a force for good or evil, but he is building a massive army all across the Internet. All should be wary.
(__/)
(=’.'=) This is Bunny. Copy and paste Bunny into your
(“)_(“) signature to help him gain world domination.
bunny is ascii art (key strokes to create image) like this:
Making Objects Using Keyboard Characters