diff --git a/meta-yocto/conf/local.conf.sample.extended b/meta-yocto/conf/local.conf.sample.extended
index 628f14dbb0..9585432bc6 100644
--- a/meta-yocto/conf/local.conf.sample.extended
+++ b/meta-yocto/conf/local.conf.sample.extended
@@ -15,7 +15,7 @@
 
 #DISTRO_FEATURES = "alsa bluetooth ext2 irda pcmcia usbgadget usbhost wifi nfs zeroconf pci ${DISTRO_FEATURES_LIBC}"
 
-# If you want to get an image based on directfb without x11, Please copy this variable to build/conf/local.conf
+# If you want to get an image based on gtk+directfb without x11, Please copy this variable to build/conf/local.conf
 #DISTRO_FEATURES = "alsa argp bluetooth ext2 irda largefile pcmcia usbgadget usbhost wifi xattr nfs zeroconf pci 3g directfb ${DISTRO_FEATURES_LIBC}"
 
 # ENABLE_BINARY_LOCALE_GENERATION controls the generation of binary locale
@@ -78,11 +78,21 @@
 # TCMODE controls the characteristics of the generated packages/images by
 # telling poky which toolchain 'profile' to use.
 #
-# The default is "default"
-# Use "external-MODE" to use the precompiled external toolchains where MODE
-# is the type of external toolchain to use e.g. eabi. You need to ensure 
-# the toolchain you want to use is included in an appropriate layer
-# TCMODE ?= "external-eabi"
+# The default is "default" which uses the internal toolchain. With
+# additional layers, it is possible to set this to use a precompiled
+# external toolchain. One example is the Sourcery G++ Toolchain, support
+# for which is now in the separate meta-sourcery layer:
+#
+#  http://github.com/MentorEmbedded/meta-sourcery/
+#
+# meta-sourcery can be used as a template for adding support for other
+# external toolchains. See the link above for further details.
+#
+# TCMODE points the system to a file in conf/distro/include/tcmode-${TCMODE}.inc,
+# so for meta-sourcery which has conf/distro/include/tcmode-external-sourcery.inc
+# you would set it as follows:
+#
+# TCMODE ?= "external-sourcery"
 
 # mklibs library size optimization is more useful to smaller images,
 # and less useful for bigger images. Also mklibs library optimization
@@ -178,37 +188,33 @@
 # when the disk space reduces 50M (or the amount of inode reduces 5k).
 #BB_DISKMON_WARNINTERVAL = "50M,5K"
 
-# Archiving source code, configure what kind of sources will be archived
-# and the output format. The output files will be put in
-# ${DEPLOY_DIR}/sources/.
+# Archiving source code configuration
 #
-# You can add the following 3 lines to the conf file to get a quick
-# usage:
+# The following variables control which files to archive and the type to archive to generate.
+# There are three basic class defintions of common operations that might be desired and these
+# can be enabled by uncommenting one of the following lines:
+#
+# INHERIT += "archive-original-source"
+# INHERIT += "archive-patched-source"
+#INHERIT =+ "archive-configured-source"
+#
+# Type of archive:
+# SOURCE_ARCHIVE_PACKAGE_TYPE = 'srpm'
+#SOURCE_ARCHIVE_PACKAGE_TYPE ?= 'tar'
+#
+# Whether to include WORKDIR/temp, .bb and .inc files:
+# 'logs_with_scripts' include WORKDIR/temp directory and .bb and .inc files
+# 'logs' only include WORKDIR/temp
+# ARCHIVER_MODE[log_type] = "logs logs_with_scripts"
+# There are three basic class defintions of common operations 
+# that might be desired and these can be enabled by 
+# uncommenting five of the following lines:
+# ARCHIVER_MODE[filter] ?= "yes no"
+# Filter packages according to license
 #ARCHIVER_MODE ?= "original"
-#ARCHIVER_CLASS = "${@'archive-${ARCHIVER_MODE}-source' if ARCHIVER_MODE != 'none' else ''}"
-#INHERIT += "${ARCHIVER_CLASS}"
-#
-# Detailed configuration:
-# What kind of sources will be archived, the ARCHIVER_MODE could be:
-# original: the ${S} after do_unpack
-# patched : the ${S} after do_patch
-# configured: the ${S} after do_configure
-#ARCHIVER_MODE ?= "original"
-#
-# The output format type, tar or srpm, the default is "tar".
 #ARCHIVER_MODE[type] ?= "tar"
-#
-# Whether include the log file under ${T} and the recipe (.bb and .inc),
-# the default is "logs_with_scripts".
 #ARCHIVER_MODE[log_type] ?= "logs_with_scripts"
-#
-# license filter:
-# yes: Only the COPYLEFT_LICENSE_INCLUDE recipe will be archived
-# no: All kinds lof license will be archived
-# The default is "no"
 #ARCHIVER_MODE[filter] ?= "no"
-#
-# Put the following two lines in the conf file with intact.
 #ARCHIVER_CLASS = "${@'archive-${ARCHIVER_MODE}-source' if ARCHIVER_MODE != 'none' else ''}"
 #INHERIT += "${ARCHIVER_CLASS}"