\newcommand{\ttss}{\tt \scriptsize}
\begin{landscape}
-\begin{longtable}{|l|lcc>{\raggedright}p{2.5in}cc|}
+\begin{longtable}{|p{1.8in}|lcc>{\raggedright}p{2.5in}cc|}
\caption{Details of {\tt [~moleculetype~]} directives}\\
\dline
Name of interaction & Topology file directive & num. & func. & Order of parameters and their units & use in & Cross- \\
\endhead
\dline
\endfoot
-\label{tab:topfile2}\footnotetext[1]{The required number of atom indices for this directive}\footnotetext[2]{The index to use to select this function type}\footnotetext[3]{Indicates which of the parameters for this interaction can be interpolated during free energy calculations}\footnotetext[4]{This interaction type will be used by {{\tts grompp}} for generating exclusions}\footnotetext[5]{This interaction type can be converted to constraints by {{\tts grompp}}}\footnotetext[7]{The combination rule determines the type of LJ parameters, see~\ssecref{nbpar}}\footnotetext[6]{No connection, and so no exclusions, are generated for this interaction}bond
- & {\tts bonds}\fnm{4},\fnm{5} & 2 & 1 & $b_0$ (nm); $k_b$ (\kJmolnm{-2}) & all & \ssecref{harmonicbond} \\
+% The footnotetext fields only work inside the body, and not from a
+% column with ``p'' formatting'!
+bond & {\tts bonds}\fnm{4},\fnm{5} & 2 & 1 & $b_0$ (nm); $k_b$ (\kJmolnm{-2}) & all & \ssecref{harmonicbond}
+\label{tab:topfile2} \footnotetext[1]{The required number of atom indices for this directive}\footnotetext[2]{The index to use to select this function type}\footnotetext[3]{Indicates which of the parameters for this interaction can be interpolated during free energy calculations}\footnotetext[4]{This interaction type will be used by {{\tts grompp}} for generating exclusions}\footnotetext[5]{This interaction type can be converted to constraints by {{\tts grompp}}}\footnotetext[7]{The combination rule determines the type of LJ parameters, see~\ssecref{nbpar}}\footnotetext[6]{No connection, and so no exclusions, are generated for this interaction}
+\\
G96 bond & {\tts bonds}\fnm{4},\fnm{5} & 2 & 2 & $b_0$ (nm); $k_b$ (\kJmolnm{-4}) & all & \ssecref{G96bond} \\
Morse & {\tts bonds}\fnm{4},\fnm{5} & 2 & 3 & $b_0$ (nm); $D$ (\kJmol); $\beta$ (nm$^{-1}$) & all & \ssecref{Morsebond} \\
cubic bond & {\tts bonds}\fnm{4},\fnm{5} & 2 & 4 & $b_0$ (nm); $C_{i=2,3}$ (\kJmolnm{-i}) & & \ssecref{cubicbond} \\
\label{subsec:fffiles}
Many force fields are available by default.
Force fields are detected by the presence of {\tt <name>.ff} directories
-in the {\gromacs} {\tt /share/top} sub-directory and/or the working directory.
+in the {\tt \$GMXLIB/share/gromacs/top} sub-directory and/or the working directory.
The information regarding the location of the force field files is printed
by {\tt pdb2gmx} so you can easily keep track of which version of a force field
is being called, in case you have made modifications in one location or another.