Updated  02/06/2026 - Will Godfrey

This can be called from anywhere in the code with:

    synth->CBtest(datablock);

Where datablock is any defined control block.
This is most often getData or putData

If datablock is pointing to a text message this will be read and removed from the
list, but not displayed. However if the following line is used then the message
line will be printed but without removing it from the message list.

synth->CBtest(datablock, false);
