Description:
	Using the panels flag, along with -notitles. Also note -sharelabel, which removes axis labels except for the first column and the last row.
	Suitable if all subplots shares the same axis labels.
File(s) used:
	gmx_files/rmsd_calpha.xvg gmx_files/rmsd_sidechain.xvg
Command:
	plotxvg -f gmx_files/rmsd_calpha.xvg gmx_files/rmsd_sidechain.xvg -panels -sharelabel -notitles -ls solid  -save plotxvg_tests-output/06two_panels.pdf -noshow
