Columns are selected through menus in the drawing command. You can quickly compute a function fit, including a non-parametric fit. There are two ways to zoom in on data. One is using the Loupe tool, which inspects the underlying data without changing the graph. The other is to click and drag a region in x and/or y. When you restrict the x or y axis, a window pops up when you hover above the axis. This allows you to quickly change the zooming region.
You can set labels, and drag entries around on the screen. Fonts are set using a style sheet approach. In the movie below, fonts are defined relative to the main font. The labels can use properties of other drawing commands, for example fitting parameter, which column is being used etc.