WaveMetrics has long provided handy procedure files that extend Igor´s capabilities using Igor´s own programming language. However, to use one of these procedure files, you had to:

With "packages" this can all be accomplished with a single selection from one of the Packages menus. For example, the Polar Graphs package can be selected from the Windows->New->Polar Graph:

menu selection of the New Polar Graph menu

This loads the necessary procedure files and creates the Polar Graphs panel (shown here after creating a polar graph):

Polar Graphs panel and example polar graph window

You can create your own Packages, too. Take a look at the menu definitions in WMMenus.ipf in your Igor Pro Folder to see how the WaveMetricians did it, and then create your own separate procedure file with similar menu definitions.