Parametric Design?

I build windows for historic properties and provide shop drawings for my clients. I've had Corel for years and it does a fine job with this task. However, I'm getting busier and I'd like to automate the task since the only difference between windows is the height and width or in other words the length of the stiles and rails. I'd like to find a program or add-on that will allow me to store the dims of the components (stiles, rails, sills etc.) then just plug in the unit height and width and have the drawing automatically generated. Is there a function in corel for this or is there an add-on you know of? 

Also, can anyone describe what I'm asking for - like parametric desgin or something cool like that?