Once upon a time, in a land not so far away, there lived a city full of mice or, as some assistive technology buffs will insist, mouses.
There were all kinds of mouses. Most were used with hands, but others were used in different ways. They were made for people who didn't find it practical to use a mouse with their hands.
Tetra Mouse was one of those mouses. Tetra Mouse was used by people with their chin, lips or tongue. He was shaped like a small black box, with two white sticks protruding out and knobs at the end of the sticks. The right knob was used to move the cursor, up , down or diagonally. The left knob was used to click, right click, drag and drop and perform other functions like controlling the speed. A series of lights on top of the box sent signals when the function was changed.
Just plugging Tetra Mouse into a computer made him happy - his little lights would go off and he was ready to work. He didn't care if it was night or day outside. He didn't need any software that could crash. No, he was an independent little mouse. There he was, blinking and winking and ready to cover things 24/7. Tetra Mouse happily raced the cursor around the screen, sending off only an occasional click and blinking light, even at 2 a.m. In dawn's early light, he sat waiting, ready to start a new day.
And where did Tetra Mouse hang out when he wasn't working? Right on an articulating arm, ready to go. You see, Tetra Mouse was not only reliable, but loyal. So you would think that Tetra Mouse, with all these wonderful qualities, would be famous. Alas- he was not, but that didn't bother him. To those he helped, he knew he was - well - a hero.
Almost as much a hero as another mouse, but we'll leave that story for another day.