corrected documentation a bit

qse/doc/page/cut.doc

@@ -1,4 +1,28 @@
 /** @defgroup cut TEXT CUTTER
 
-Text Cutting Utility
+@section cut_contents CONTENTS
+- \ref cut_intro
+- \ref cut_howtouse
+
+@section cut_intro INTRODUCTION
+
+Most of unix platforms offer a text utility with which you can remove 
+or extract selected subtext. This library contains data types and functions
+that can help you embed such text manipulation functionality into your 
+applications.
+
+@section cut_howtouse HOW TO USE
+
+See the following key functions.
+
+- qse_cut_open()
+- qse_cut_comp()
+- qse_cut_exec()
+- qse_cut_close()
+
+Also see a helper functions for easier use.
+
+- qse_cut_openstd()
+- qse_cut_compstd()
+- qse_cut_execstd()
 */

qse/doc/page/sed.doc

@@ -7,8 +7,8 @@
 
 @section sed_intro INTRODUCTION
 
-The sed stream editor is a non-interactive text editing tool commonly used
-on Unix environment. Sed reads text from an input stream, stores it to
+A stream editor is a non-interactive text editing tool commonly used
+on Unix environment. It reads text from an input stream, stores it to
 pattern space, manipulates the pattern space by applying a set of editing
 commands, and writes the pattern space to an output stream. Typically, the
 input and output streams are a console or a file.