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    On 18/01/2012 8:35 PM, Mr Bernard Ramos wrote:
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      cite="mid:1326879337.4124.YahooMailClassic@web161505.mail.bf1.yahoo.com"
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                      <div _yuid="yui_3_1_1_3_132687914105880">Hi
                        everyone!</div>
                      <div>&nbsp;</div>
                      <div>On this page</div>
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                        <a moz-do-not-send="true"
                          href="http://manual.gromacs.org/online/g_hbond.html"
                          target="_blank" rel="nofollow"><span
                            class="yshortcuts" id="lw_1326879228_0">http://manual.gromacs.org/online/g_hbond.html</span></a></div>
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                        there is an option -r2 when using g_hbond. What
                        is this r2? I can't find it in the Gromacs
                        manual. option -a is the angle H-O-O, option -r
                        is the O-O distance which can be switched to H-A
                        by using the "-da no". Need help on what is -r2
                        (could this be for specifying a third criterion
                        for the for distance O-H in addition to the
                        angle cut-off and O-O distance cut-off</div>
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    <br>
    Apparently nobody knows. Someone will need to look in the code to
    find out - probably you :-). Good luck!<br>
    <br>
    Mark<br>
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