You will get the pop-up menu if you right click with the mouse on the picture. The items in the pop-up menu are (along with some standard zoom and save function):
Properties
This is where you select files to plot and everything else about the picture and simulation setup.
Toolbar
Moving forwards and backwards in time to create a simulation and maybe a video file.
Note: It is always possible to stop an animation by pressing the <esc> key.
The video icon creates the file. The name of the video file is defined on the Step Configuration page.
The envelope icon enable the plotting of curves for several time steps simultaneously. The time step between the plotted curves is defined on the Step Configuration page.
File name legend
As default, the file name and path of your input data file is shown on the plot, but you can switch this off by selecting this menu item.