-# Although these variables are 'shell' variables, they need to be upper-case so
-# 'shellcheck' does check for 'used-before-set' when they are referenced. So if
-# forget to 'source' this file, you will get a 'run-time' error (if you have -u
-# set), otherwise you will get "MAVEN_OPIONS=''.
+# These variables are shell (local) variables and need to be lower-case so
+# Shellcheck knows they are shell variables and will check for
+# 'used-before-set'.