Index: man5/src.conf.5
===================================================================
--- man5/src.conf.5	(revision 289411)
+++ man5/src.conf.5	(working copy)
@@ -2,7 +2,7 @@
 .\" from FreeBSD: head/tools/build/options/makeman 287942 2015-09-17 22:04:46Z bdrewery
 .\" $FreeBSD$
 .Dd September 18, 2015
-.Dt SRC.CONF 5
+.Dt src.conf 5
 .Os
 .Sh NAME
 .Nm src.conf
@@ -10,15 +10,15 @@
 .Sh DESCRIPTION
 The
 .Nm
-file contains settings that will apply to every build involving the
+file contains variables that control what components will be generated during the build process
+of the
 .Fx
-source tree; see
+source tree (/usr/src); see
 .Xr build 7 .
 .Pp
 The
 .Nm
-file uses the standard makefile syntax.
-However,
+file uses the standard makefile syntax. However,
 .Nm
 should not specify any dependencies to
 .Xr make 1 .
@@ -39,8 +39,7 @@
 Overriding the location of
 .Nm
 may be necessary if the system-wide settings are not suitable
-for a particular build.
-For instance, setting
+for a particular build. For instance, setting
 .Va SRCCONF
 to
 .Pa /dev/null
@@ -82,8 +81,7 @@
 .Dq Li FALSE
 or
 .Dq Li NO .
-Just the existence of an option will cause
-it to be honoured by
+Just the existence of an option will cause it to be honoured by
 .Xr make 1 .
 .Pp
 The following list provides a name and short description for variables
Index: man7/build.7
===================================================================
--- man7/build.7	(revision 289411)
+++ man7/build.7	(working copy)
@@ -25,11 +25,11 @@
 .\" $FreeBSD$
 .\"
 .Dd December 31, 2014
-.Dt BUILD 7
+.Dt Build 7
 .Os
 .Sh NAME
 .Nm build
-.Nd information on how to build the system
+.Nd General instructions on how to build the system
 .Sh DESCRIPTION
 The sources for the
 .Fx
@@ -66,32 +66,30 @@
 things in that directory.
 Issuing the
 .Xr make 1
-command in any directory or
-subdirectory of those directories has the same effect as issuing the
-same command in all subdirectories of that directory.
-With no target specified, the things in that directory are just built.
+command in any directory issues the 
+.Xr make 1
+command recursively in all subdirectories.
+With no target specified, the items in the directories are built 
+and no further action is taken.
 .Pp
-A source tree is allowed to be read-only.
-As described in
-.Xr make 1 ,
-objects are usually built in a separate object directory hierarchy
-specified by the environment variable
-.Va MAKEOBJDIRPREFIX ,
-or under
+A source tree is allowed to be read-only as all build artifcats generated by 
+.Xr make 1
+are generated in 
 .Pa /usr/obj
-if variable
+by default. The destination directory can be changed by specifying 
+a new location using 
 .Va MAKEOBJDIRPREFIX
-is not set.
-For a given source directory, its canonical object directory
-would be
-.Pa ${MAKEOBJDIRPREFIX}${.CURDIR}
-if
-.Xr make 1
-variable
+as described in
+.Xr make 1 .
+
+Therefore, for a given source directory, its build artifacts 
+would be generated in
+.Pa /usr/obj/${.CURDIR}
+or to
+.Pa ${MAKEOBJDIRPREFIX}/${.CURDIR}
+according to the 
 .Va MAKEOBJDIRPREFIX
-is set, or
-.Pa /usr/obj${.CURDIR}
-if this variable is not set.
+variable.
 Cross-builds set the object directory as described in the
 documentation for the
 .Cm buildworld
@@ -102,8 +100,14 @@
 variables described in the
 .Sx ENVIRONMENT
 section below, and by the variables documented in
-.Xr make.conf 5 .
+.Xr make.conf 5 . 
 .Pp
+The default components included in the build are specified in the file 
+/etc/src.conf in the source tree. To override the default file, include 
+the SRCCONF option in the make steps, pointing to a custom src.conf 
+file. For more information see 
+.Xr src.conf 5 .
+.Pp
 The following list provides the names and actions for the targets
 supported by the build system:
 .Bl -tag -width ".Cm cleandepend"
@@ -445,6 +449,9 @@
 .Bd -literal -offset indent
 make PORTS_MODULES=emulators/kqemu-kmod kernel
 .Ed
+.It Va SRCCONF
+Specify a file to override the default /etc/src.conf. The src.conf file controls the components to build. See 
+.Xr SRC.CONF 5
 .It Va STRIPBIN
 Command to use at install time when stripping binaries.
 Be sure to add any additional tools required to run