Some documentation fixes and enhancments.

Signed-off-by: Thomas Hochstein <thh@inter.net>

doc/INSTALL

@@ -1,7 +1,7 @@
 NewsStats 0.1  (c) 2010-2012 Thomas Hochstein <thh@inter.net>
 
-NewsStats is a software package for gathering statistical data live
-from a Usenet feed and subsequent examination.
+NewsStats is a software package used to gather statistical information
+from a live Usenet feed and for its subsequent examination.
 
 This script package is free software; you can redistribute it and/or
 modify it under the terms of the GNU Public License as published by

feedlog.pl

@@ -200,7 +200,7 @@ Suppress logging to syslog.
 
 =head1 INSTALLATION
 
-See L<doc/INSTALL.>
+See L<doc/INSTALL>.
 
 =head1 EXAMPLES
 

gatherstats.pl

@@ -205,7 +205,7 @@ gatherstats - process statistical data from a raw source
 
 =head1 SYNOPSIS
 
-B<gatherstats> [B<-Vhdt>] [B<-m> I<YYYY-MM> | I<YYYY-MM:YYYY-MM>] [B<-s> I<stats] [B<-c> I<filename template>]] [B<--hierarchy> I<TLH>] [B<--rawdb> I<database table>] [B<-groupsdb> I<database table>] [B<--clientsdb> I<database table>] [B<--hostsdb> I<database table>]
+B<gatherstats> [B<-Vhdt>] [B<-m> I<YYYY-MM> | I<YYYY-MM:YYYY-MM>] [B<-s> I<stats>] [B<-c> I<filename template>]] [B<--hierarchy> I<TLH>] [B<--rawdb> I<database table>] [B<-groupsdb> I<database table>] [B<--clientsdb> I<database table>] [B<--hostsdb> I<database table>]
 
 =head1 REQUIREMENTS
 
@@ -292,7 +292,6 @@ Set processing period to a single month in YYYY-MM format or to a time
 period between two month in YYYY-MM:YYYY-MM format (two month, separated
 by a colon). 
 
-
 =item B<-s>, B<--stats> I<type>
 
 Set processing type to one of I<all> and I<groups>. Defaults to all
@@ -306,8 +305,9 @@ one group on each line and ignoring everything after the first
 whitespace (so you can use a file in checkgroups format or (part of)
 your INN active file).
 
-The filename is taken from I<filename template>, amended by each B<--
-month> B<gatherstats> is processing, so that
+The filename is taken from I<filename template>, amended by each
+B<--month> B<gatherstats> is processing in the form of I<template-YYYY-MM>,
+so that
 
     gatherstats -m 2010-01:2010-12 -c checkgroups
 

groupstats.pl

@@ -372,6 +372,9 @@ Restrict output to those newgroups present in a file in checkgroups format
 (one newgroup name per line; everything after the first whitespace on each
 line is ignored). All other newsgroups will be removed from output.
 
+Contrary to B<gatherstats>, I<filename> is not a template, but refers to
+a single file in checkgroups format.
+
 =item B<-r>, B<--report> I<default|average|sums>
 
 Choose the report type: I<default>, I<average> or I<sums>
@@ -429,8 +432,8 @@ you'll get the following result:
 
 de.comp.datenbanken.misc has not been considered even though it has 38
 postings in total, because it has less than 25 postings in every single
-month. If you want to list all newsgroups with more than 25 postings U<in
-total>, you'll have to set the boundary type to I<sum>, see below.
+month. If you want to list all newsgroups with more than 25 postings
+I<in total>, you'll have to set the boundary type to I<sum>, see below.
 
 A boundary type of I<level> will show only those newsgroups - at all -
 that satisfy the boundaries in each and every single month. With the above
@@ -442,10 +445,10 @@ you'll get this result:
     de.comp.datenbanken.ms-access        293
 
 de.comp.datenbanken.mysql has not been considered because it had less than
-25 postings in 2012-02.
+25 postings in 2012-02 (only).
 
 You can use that to get a list of newsgroups that have more (or less) then
-x postings during the whole reporting period.
+x postings in every month during the whole reporting period.
 
 A boundary type of I<average> will show only those newsgroups - at all -that
 satisfy the boundaries on average. With the above list of newsgroups and