Will is my name, CAD is my job - Computer-Aided Drafting. I make maps, figures, and displays for a civil engineering company.
The name was coined by one of my first bosses back in about 1988. I work in a program called AutoCAD, from a company called Autodesk. In those days, AutoCAD used graphics tablets quite extensively as a means of input, and included a pre-made menu template for them. But I made a custom menu template for mine, and on a lark, I replaced the "Auto" with "Will," since I figured I should give credit where credit was due. My boss saw "WillCAD" on the menu and thought I meant it as my name, so everyone in the office started calling me that, and I adopted it as my nickname and screen name whenever I went online.