Roller Coaster Tycoon 3 on PC Steam. Use pg up and page down to zoom in /out . Or use mouse scroll

My kid has been playing roller coaster tycoon 3 religiously. But sadly, he's been learning through the ipad. So recently, he asked me.. why is my RCT3 broken.. because he was trying to zoom in and out using mouse pinch. In this video, I show that you can zoom in (page up key) and zoom out (with page down key). Also, you can just use the mouse scroller (if you have that) to scroll in and out to zoom for your RCT3 fun.