+ *
+ * FLAG_VERBOSE is set when the user requests verbose details.
+ *
+ * FLAG_STDERR is set in command-line applications (which have a
+ * functioning stderr that it makes sense to write to) and not in
+ * GUI applications (which don't).
+ *
+ * FLAG_INTERACTIVE is set when a full interactive shell session is
+ * being run, _either_ because no remote command has been provided
+ * _or_ because the application is GUI and can't run non-
+ * interactively.