Save ChordFile As... Window
This window is displayed whenever you click the Save As Button on the ChordMap.
It allows you to choose the number (0 - 9) to append to the .chp extension of the ChordFile name. This will let you choose from a collection of ChordFiles whenever you load a Project. You can use this to save ChordFiles that have been created in different ways (e.g. by using different selected tracks, different time divisions, or copied from sheet music.)