... Delete The list of newly selected spectra is deleted and the image is redrawn- minus the these extraction regions. Note that any spectra that existed at the start of the selection session will not be deleted- see main Main window buttons if you wish to delete every spectrum . Image Allows the user to change the image appearance using ds9 (the only parameters that can be changed are color and scale). ... Parameters Allows the user to change the input parameters to omgrism or omgrismplot. ...