Consider the introduction tutorials, the deviant average in run01.
It is imported+averaged from a raw file on which we had removed blink+cardiac SSP components.
The menu "Select active projectors" is disabled, because we don't offer interactively the selection of SSP projectors on imported files.
The menu "Load active projectors as montage" is however available (without checking if there is actually anything to be used in the ChannelMat.Projector field).
If we click on this menu while the deviant average is loaded, we get access to the SSP decompositions as new montages. The first component is flat because it has been suppressed from the signal at the import time.
