--- /dev/null
+++ b/doc/obdistgen.1
@@ -0,0 +1,44 @@
+.Dd October 26, 2017
+.Os "Open Babel" 2.4.1
+.Dt obdistgen 1 URM
+.Sh NAME
+.Nm obdistgen
+.Nd "generate rough 3D coordinates for SMILES (or other 0D files)"
+.Sh SYNOPSIS
+.Nm
+.Ar filename
+.Sh DESCRIPTION
+Generates SDFs with distance geometry.
+.Sh EXAMPLES
+.Dl "obdistgen molecule.smi >molecule.sdf"
+.Pp
+Generate rough 3D coordinates for molecule.smi and write
+it to molecule.sdf
+.Sh SEE ALSO
+.Xr obgen 1 .
+.Pp
+The web pages for Open Babel can be found at:
+\%<\fBhttp://openbabel.org/\fR>
+.Sh AUTHORS
+.An -nosplit
+Open Babel is developed by a cast of many, including currrent maintainers
+.An Geoff Hutchison ,
+.An Chris Morley ,
+.An Michael Banck , 
+and innumerable others who have contributed fixes and additions. 
+For more contributors to Open Babel, see 
+\%<\fBhttp://openbabel.org/wiki/THANKS\fR>
+.Sh COPYRIGHT
+Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc. 
+.br
+Some portions Copyright (C) 2001-2007 by Geoffrey R. Hutchison and
+other contributors.
+.Pp
+ This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation version 2 of the License.
+.Pp
+ This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
--- /dev/null
+++ b/doc/obrms.1
@@ -0,0 +1,47 @@
+.Dd October 26, 2017
+.Os "Open Babel" 2.4.1
+.Dt obrms 1 URM
+.Sh NAME
+.Nm obrms
+.Nd "calculate the RMSD between two chemically identical structures"
+.Sh SYNOPSIS
+.Nm
+.Op Ar -firstonly
+.Ar filename1
+.Ar filename2
+.Sh DESCRIPTION
+Computes the heavy-atom RMSD of identical compound structures.
+Structures in multi-structure files are compared one-by-one unless -firstonly
+is passed, in which case only the first structure in the reference file is used.
+.Sh EXAMPLES
+.Dl "obrms ref.sdf test.sdf"
+.Pp
+Calculate the RMSD between ref.sdf and test.sdf
+.Sh SEE ALSO
+.Xr obfit 1 .
+.Pp
+The web pages for Open Babel can be found at:
+\%<\fBhttp://openbabel.org/\fR>
+.Sh AUTHORS
+.An -nosplit
+Open Babel is developed by a cast of many, including currrent maintainers
+.An Geoff Hutchison ,
+.An Chris Morley ,
+.An Michael Banck , 
+and innumerable others who have contributed fixes and additions. 
+For more contributors to Open Babel, see 
+\%<\fBhttp://openbabel.org/wiki/THANKS\fR>
+.Sh COPYRIGHT
+Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc. 
+.br
+Some portions Copyright (C) 2001-2007 by Geoffrey R. Hutchison and
+other contributors.
+.Pp
+ This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation version 2 of the License.
+.Pp
+ This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
--- /dev/null
+++ b/doc/obsym.1
@@ -0,0 +1,43 @@
+.Dd October 26, 2017
+.Os "Open Babel" 2.4.1
+.Dt obsym 1 URM
+.Sh NAME
+.Nm obsym
+.Nd "detect 3D point group symmetry"
+.Sh SYNOPSIS
+.Nm
+.Ar filename
+.Sh DESCRIPTION
+Detects 3D point group symmetry and writes out symmetrized coordinates.
+.Sh EXAMPLES
+.Dl "obsym molecule1.cif >molecule2.cif"
+.Pp
+Symmetrizes coordinates of molecule1.cif and write it to molecule2.cif
+.Sh SEE ALSO
+.Xr obgen 1 .
+.Pp
+The web pages for Open Babel can be found at:
+\%<\fBhttp://openbabel.org/\fR>
+.Sh AUTHORS
+.An -nosplit
+Open Babel is developed by a cast of many, including currrent maintainers
+.An Geoff Hutchison ,
+.An Chris Morley ,
+.An Michael Banck , 
+and innumerable others who have contributed fixes and additions. 
+For more contributors to Open Babel, see 
+\%<\fBhttp://openbabel.org/wiki/THANKS\fR>
+.Sh COPYRIGHT
+Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc. 
+.br
+Some portions Copyright (C) 2001-2007 by Geoffrey R. Hutchison and
+other contributors.
+.Pp
+ This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation version 2 of the License.
+.Pp
+ This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
--- /dev/null
+++ b/doc/obtautomer.1
@@ -0,0 +1,44 @@
+.Dd October 26, 2017
+.Os "Open Babel" 2.2
+.Dt obtautomer 1 URM
+.Sh NAME
+.Nm obtautomer
+.Nd "enumerate tautomer SMILES and canonical tautomer SMILES"
+.Sh SYNOPSIS
+.Nm
+.Op Ar -c 
+.Ar filename
+.Sh DESCRIPTION
+Enumerates tautomer SMILES and canonical tautomer SMILES.
+.Sh EXAMPLES
+.Dl "obtautomer molecule.smi >tautomers.smi"
+.Pp
+Enumerates tautomers for molecule.smi and writes them to tautomers.smi
+.Sh SEE ALSO
+.Xr babel 1 ,
+.Pp
+The web pages for Open Babel can be found at:
+\%<\fBhttp://openbabel.org/\fR>
+.Sh AUTHORS
+.An -nosplit
+Open Babel is developed by a cast of many, including currrent maintainers
+.An Geoff Hutchison ,
+.An Chris Morley ,
+.An Michael Banck , 
+and innumerable others who have contributed fixes and additions. 
+For more contributors to Open Babel, see 
+\%<\fBhttp://openbabel.org/wiki/THANKS\fR>
+.Sh COPYRIGHT
+Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc. 
+.br
+Some portions Copyright (C) 2001-2008 by Geoffrey R. Hutchison and
+other contributors.
+.Pp
+ This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation version 2 of the License.
+.Pp
+ This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
--- /dev/null
+++ b/doc/obthermo.1
@@ -0,0 +1,51 @@
+.Dd October 26, 2017
+.Os "Open Babel" 2.4.1
+.Dt obthermo 1 URM
+.Sh NAME
+.Nm obthermo
+.Nd "extract the thermochemistry for a molecule"
+.Sh SYNOPSIS
+.Nm
+.Op options
+.Ar filename
+.Sh DESCRIPTION
+The obthermo tool can be used to extract the thermochemistry, e.g. Delta H formation
+Delta G formation and the standard entropy from e.g. a Gaussian calculation.
+.Sh OPTIONS
+.Bl -tag -width flag
+.It Fl --symm Ar N
+override symmetry number used in input file
+.It Fl --nrot Ar N
+number of rotatable bonds for conformational entropy
+.It Fl --dbdt Ar x
+temperature derivative of second virial coefficient for cp calculation
+.It Fl --kj
+output kJ/mol related units (default kcal/mol)
+.El
+.Sh SEE ALSO
+.Xr babel 1 ,
+.Pp
+The web pages for Open Babel can be found at:
+\%<\fBhttp://openbabel.org/\fR>
+.Sh AUTHORS
+.An -nosplit
+Open Babel is developed by a cast of many, including currrent maintainers
+.An Geoff Hutchison ,
+.An Chris Morley ,
+.An Michael Banck , 
+and innumerable others who have contributed fixes and additions. 
+For more contributors to Open Babel, see 
+\%<\fBhttp://openbabel.org/wiki/THANKS\fR>
+.Sh COPYRIGHT
+Copyright (C) 1998-2001 by OpenEye Scientific Software, Inc. 
+.br
+Some portions Copyright (C) 2001-2008 by Geoffrey R. Hutchison and
+other contributors.
+.Pp
+ This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation version 2 of the License.
+.Pp
+ This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.