Q: how do I manage directivity files?

A: In version 9 and later it is possible to use subdirectories for directivity files. This makes it possible to organize directivity patterns in folders e.g. to keep directivities from a specific manufacturer in a folder of its own making it simpler to make use of large libraries of loudspeakers. Simply make subdirectories for each loudspeaker manufacturer in the above mentioned directivity files directory and store the relevant directivity files there.