Library functions and modules should be in the 3 man page section. Also the files should end in '.3'

docs/man/man3/ansible.ini_file.3

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+.TH ANSIBLE.INI_FILE 5 "2012-10-02" "0.8" "ANSIBLE MODULES"
+." generated from library/ini_file
+.SH NAME
+ini_file \- Tweak settings in INI files
+." ------ DESCRIPTION
+.SH DESCRIPTION
+.PP
+Manage (add, remove, change) individual settings in an INI-style file without having to manage the file as a whole with, say, \fItemplate\fR or \fIassemble\fR. Adds missing sections if they don't exist. 
+." ------ OPTIONS
+."
+."
+.SH OPTIONS
+
+.IP option
+if set (required for changing a \fIvalue\fR), this is the name of the option.May be omitted if adding/removing a whole \fIsection\fR.
+.IP others
+all arguments accepted by the \fIfile\fR module also work here
+.IP dest
+Path to the INI-style file; this file is created if required(required)
+.IP section
+Section name in INI file. This is added if \fCstate=present\fR automatically when a single value is being set.(required)
+.IP backup
+Create a backup file including the timestamp information so you can get the original file back if you somehow clobbered it incorrectly.
+.IR Choices :
+yes,no.
+.IP value
+the string value to be associated with an \fIoption\fR. May be omitted when removing an \fIoption\fR.."
+."
+." ------ NOTES
+.SH NOTES
+.PP
+While it is possible to add an \fIoption\fR without specifying a \fIvalue\fR, this makes no sense. 
+."
+."
+." ------ EXAMPLES
+.SH EXAMPLES
+.PP
+.nf
+ini_file dest=/etc/conf section=drinks option=fav value=lemonade mode=0600 backup=true
+.fi
+.PP
+.nf
+ini_file dest=/etc/anotherconf
+         section=drinks
+         option=temperature
+         value=cold
+         backup=true
+
+.fi
+." ------- AUTHOR
+.SH AUTHOR
+Jan-Piet Mens
+.SH SEE ALSO
+.IR ansible (1),
+.I http://ansible.github.com/modules.html#ini-file