Ignore_xray
The ignore option in get_element_lines, need to be improved so you can either specify a family of lines, eg "Malpha" or a specfic eleemnt eg. Pt_Malpha
The ignore option in get_element_lines, need to be improved so you can either specify a family of lines, eg "Malpha" or a specfic eleemnt eg. Pt_Malpha