Examples:
-- To use an existing Yocto build directory or create a new buil dir using
+- To use an existing Yocto build directory or create a new build dir using
the supplied defaults.
$ . $PROGNAME build
-- To create a new Yocto build directory:
+- To create a new Yocto build directory with custom defaults:
$ MACHINE=tx6q-xxxx DISTRO=poky . $PROGNAME build
"