--- a/Makefile	Tue Nov 27 16:03:34 2012 +0200
+++ b/Makefile	Wed Nov 28 17:57:25 2012 +0200
@@ -1,3 +1,7 @@
+
+################################################################
+# Standard GNU Makefile settings.
+
 SHELL = /bin/sh
 export PATH := /bin:/usr/bin:${PATH}
 
@@ -7,6 +11,8 @@
 MAKEFLAGS += -R
 # Disable built in suffix rules.
 .SUFFIXES:
+# Delete target file if command fails.
+.DELETE_ON_ERROR:
 # Default target.
 .DEFAULT_GOAL = all
 

--- a/cvs.rst	Tue Nov 27 16:03:34 2012 +0200
+++ b/cvs.rst	Wed Nov 28 17:57:25 2012 +0200
@@ -94,3 +94,17 @@
   $ rm $file            # remove it from local sources
   $ cvs update $file    # get a new copy from the repository
 
+List of CVS branches.
+=====================
+
+There are no such command but this command allow extract such info::
+
+  $ cd $CVS_PROJ
+  $ cvs rlog -l -h -b $(cat CVS/Repository)
+
+Update to HEAD.
+===============
+::
+
+  $ cvs up -A
+