<div dir="ltr">Yes.<br><br>On Saturday, July 27, 2019 at 5:38:20 AM UTC+1, Nam Tran wrote:<blockquote class="gmail_quote" style="margin: 0;margin-left: 0.8ex;border-left: 1px #ccc solid;padding-left: 1ex;"><div dir="ltr"><div><span style="color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px;background-color:rgb(251,250,249)">Dear CP2K experts</span><br></div><div><span style="color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px;background-color:rgb(251,250,249)"><br></span></div><div><span style="background-color:rgb(251,250,249);color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px">According to this excercise '</span><a href="https://www.cp2k.org/exercises:2018_ethz_mmm:qmmm_2018" target="_blank" rel="nofollow" onmousedown="this.href='https://www.google.com/url?q\x3dhttps%3A%2F%2Fwww.cp2k.org%2Fexercises%3A2018_ethz_mmm%3Aqmmm_2018\x26sa\x3dD\x26sntz\x3d1\x26usg\x3dAFQjCNG5KYjrgvMVEeJ9W4wfZx3fWWqnuw';return true;" onclick="this.href='https://www.google.com/url?q\x3dhttps%3A%2F%2Fwww.cp2k.org%2Fexercises%3A2018_ethz_mmm%3Aqmmm_2018\x26sa\x3dD\x26sntz\x3d1\x26usg\x3dAFQjCNG5KYjrgvMVEeJ9W4wfZx3fWWqnuw';return true;">https://www.cp2k.org/<wbr>exercises:2018_ethz_mmm:qmmm_<wbr>2018</a><span style="background-color:rgb(251,250,249);color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px">' then the shape of simulation cell in QMMM simulations must be orthorhombic,Is that true ?</span></div><div><span style="background-color:rgb(251,250,249);color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px"><br></span></div><div><span style="background-color:rgb(251,250,249);color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px">Best Regards</span></div><div><span style="background-color:rgb(251,250,249);color:rgb(51,51,51);font-family:Consolas,"Andale Mono WT","Andale Mono","Bitstream Vera Sans Mono","Nimbus Mono L",Monaco,"Courier New",monospace;font-size:14px">Nam</span></div></div></blockquote></div>