[Chimera-users] Questions about IMOD files in Chimera software.

Dear chimera-users community, I have questions about opening IMOD files in Chimera software. Can I open the IMOD files (*.mod) in Chimera? Or, Can I make a hand-drawn mask file in Chimera? I could apply several filters and masks in my iso-surface map, however, I don't know how to apply these options in Chimera. Moreover, the reconstructed tomograms were shown to the inverted iso-surface map unlike IMOD.. Can I re-invert the iso-surface map in Chimera? Best regards Si Hoon Park