Better notes in header
# SWIFT/T SETTINGS
# Settings for building Swift/T
+# This script is accessed internally by the build-*.sh scripts,
+# do not attempt to run it directly.
-# Note that this script is source by each build-* script-
+# Note that this script is source by each build-*.sh script-
# thus, there is no need to export variables to the environment
# Unless otherwise noted, set option to 0 to turn off, 1 to turn on.
