diff --git a/README b/README
index f43e001..b386475 100644
--- a/README
+++ b/README
@@ -1,12 +1,23 @@
 Sanskrit Transliteration Tool
 =============================
 This is a tool for romanisation of Sanskrit texts written in the Devanagari
-script. The program offers you two different modes of transliteration: by
-default, it transliterates a Devanagari text using the International Alphabet
-of Sanskrit Transliteration (IAST); alternatively, it can be used for
-simplified transcription into Czech language.
+script.
+
+The program offers you two different modes of transliteration: by default, it
+romanises Sanskrit texts written in the Devanagari script using the
+International Alphabet of Sanskrit Transliteration (IAST); alternatively it
+can be used for reverse transliteration of IAST encoded texts into the
+Devanagari script.
 
 
-Licensing notice
+Licensing Notice
 ----------------
-This software is released under the GPL License, version 2.
+This software is released under the terms of the GPL license version 2 as
+published by the Free Software Foundation. You can freely redistribute and/or
+modify the software under the terms of the license.
+
+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.
+
+For more information on details of the license, see the file COPYING.
diff --git a/doc/iast.1.adoc b/doc/iast.1.adoc
index 21eac15..592632a 100644
--- a/doc/iast.1.adoc
+++ b/doc/iast.1.adoc
@@ -10,7 +10,7 @@ iast - a helper for Sanskrit transliteration
 SYNOPSIS
 --------
 --------------------------------------------------------------------------------
-iast [-h] [-v] [-e] [-c] [--] [text arguments]
+iast [-h] [-v] [-f file] [-r] [-e] [-c] [text arguments]
 --------------------------------------------------------------------------------
 
 OPTIONS
@@ -21,6 +21,9 @@ show help and exit
 *-v*::
 show version number and exit
 
+*-f*::
+input file for processing
+
 *-r*::
 reverse transliteration (from Latin to Devanagari)
 
@@ -30,9 +33,6 @@ transcript into Czech
 *-e*::
 convert symbolic ASCII text to IAST representation
 
-*--*::
-read data from the standard input
-
 
 DESCRIPTION
 -----------
@@ -63,14 +63,14 @@ shortcuts to encode the letters "ā", "ī", "ū", "ś" and "ñ" respectively.
 
 COPYRIGHT
 ---------
-Copyright (c) 2018, 2020  Vlasta Vesely
+Copyright (c) 2018, 2020  Vlasta Vesely <vlastavesely@protonmail.ch>
 
 
 LICENSING AND WARRANTY
 ----------------------
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License version 2 as published
-by the Free Software Foundation.
+This software is released under the terms of the GPL license version 2 as
+published by the Free Software Foundation. You can freely redistribute and/or
+modify the software under the terms of the license.
 
 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