File size

I have a PXP file of 20Go... How can I determine what is so big in it?

Usually, waves with many points are very big. If you don't see any obvious waves with a large number of points, then such data might be 'out of sight' in the Packages folder etc. If you have Igor 9, you can see the size of each object by right-clicking the top column inside the Data Browser's folder view and activating the 'Size' option.