Dear Chris,
first of all: mricroGL an outstanding tool for neuroimaging data presentation and I love to use it. Great work and many thanks for that.
Up to now, I used an older version of mricrogl for fMRI display purposes, where I was able to hide the crosshairs in the multi planar view by using the XBARTHICK script command. When I checked out the most recent version 14-July-2017 it seems to me that the XBARTHICK command doesn't affect the crosshair thickness anymore (while the script produces no error message). How can I hide the crosshair in this latest version? 
Thanks a lot
Christian