.. _gmx principal: gmx principal ============= Synopsis -------- .. parsed-literal:: gmx principal [:strong:`-f` :emphasis:`[<.xtc/.trr/...>]`] [:strong:`-s` :emphasis:`[<.tpr/.gro/...>]`] [:strong:`-n` :emphasis:`[<.ndx>]`] [:strong:`-a1` :emphasis:`[<.xvg>]`] [:strong:`-a2` :emphasis:`[<.xvg>]`] [:strong:`-a3` :emphasis:`[<.xvg>]`] [:strong:`-om` :emphasis:`[<.xvg>]`] [:strong:`-b` :emphasis:`