diff --git a/4ti2.spec b/4ti2.spec
index 4709e25..ec2d006 100644
--- a/4ti2.spec
+++ b/4ti2.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package 4ti2
 #
-# Copyright (c) 2012 SUSE LINUX Products GmbH, Nuernberg, Germany.
+# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -14,65 +14,76 @@
 
 # Please submit bugfixes or comments via http://bugs.opensuse.org/
 #
+
+
 Name:           4ti2
 Version:        1.3.2
 Release:        0
-Group:          Productivity/Scientific/Math
-Summary:	Package for algebraic, geometric and combinatorial problems on linear spaces
+Summary:        Package for algebraic, geometric and combinatorial problems on linear spaces
 License:        GPL-2.0+
-URL:            http://4ti2.de/
+Group:          Productivity/Scientific/Math
+Url:            http://4ti2.de/
 
-Source:		%name-%version.tar.xz
-Source2:	%name-doc.tar.xz
-Patch1:		4ti2-gcc.diff
-Patch2:		4ti2-missing-libs.diff
-Patch3:		4ti2-nonvoid-return.diff
-Patch4:		4ti2-libtool.diff
+Source:         %name-%version.tar.xz
+Source2:        %name-doc.tar.xz
+Patch1:         4ti2-gcc.diff
+Patch2:         4ti2-missing-libs.diff
+Patch3:         4ti2-nonvoid-return.diff
+Patch4:         4ti2-libtool.diff
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-BuildRequires:	autoconf >= 2.59, automake, gcc-c++ >= 3.4, glpk-devel
-BuildRequires:	gmp-devel >= 4.1.4, libtool, xz
+BuildRequires:  autoconf >= 2.59
+BuildRequires:  automake
+BuildRequires:  gcc-c++ >= 3.4
+BuildRequires:  glpk-devel
+BuildRequires:  gmp-devel >= 4.1.4
+BuildRequires:  libtool
+BuildRequires:  xz
 
 %description
-(Upstream has not provided a description.)
+4ti2 is a collection of programs that compute and solve algebraic,
+geometric and combinational problems on linear spaces.
 
 %package -n lib4ti2gmp0
-Summary:	GMP-using computation library for Gröber bases with 4ti2
-Group:		System/Libraries
+Summary:        GMP-using computation library for Gröbner bases with 4ti2
+Group:          System/Libraries
 
 %description -n lib4ti2gmp0
-(Upstream has not provided a description.)
+This package contains the 4ti2 program library and supports arbitrary
+precision integers through use of GNU MP.
 
 %package -n lib4ti2int32-0
-Summary:	32-bit wide integer-using computation library for Gröbner bases with 4ti2
-Group:		System/Libraries
+Summary:        32-bit wide integer-using computation library for Gröbner bases with 4ti2
+Group:          System/Libraries
 
 %description -n lib4ti2int32-0
-(Upstream has not provided a description.)
+This package contains the 4ti2 program library and supports integer
+precision of 32 bits.
 
 %package -n lib4ti2int64-0
-Summary:	64-bit wide integer-using computation library for Gröbner bases with 4ti2
-Group:		System/Libraries
+Summary:        64-bit wide integer-using computation library for Gröbner bases with 4ti2
+Group:          System/Libraries
 
 %description -n lib4ti2int64-0
-(Upstream has not provided a description.)
+This package contains the 4ti2 program library and supports integer
+precision of 64 bits.
 
 %package -n libzsolve0
-Summary:	Library for solving systems of linear systems over the integers for 4ti2
-Group:		System/Libraries
+Summary:        Library for solving linear systems over integers for 4ti2
+Group:          System/Libraries
 
 %description -n libzsolve0
-(Upstream has not provided a description.)
+This package contains the 4ti2 library for solving systems linear systems over
+integers (\mathbb{Z}).
 
 %package devel
-Summary:	Development files for 4ti2
-Group:		Development/Libraries/C and C++
-Requires:	lib4ti2gmp0 = %version
-Requires:	lib4ti2int32-0 = %version, lib4ti2int64-0 = %version
-Requires:	libzsolve0 = %version
+Summary:        Development files for 4ti2
+Group:          Development/Libraries/C and C++
+Requires:       lib4ti2gmp0 = %version
+Requires:       lib4ti2int32-0 = %version
+Requires:       lib4ti2int64-0 = %version
+Requires:       libzsolve0 = %version
 
 %description devel
-(Upstream has not provided a description for 4ti2.)
-
 This subpackage contains the include files and library links for
 developing against 4ti2's libraries.