--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/exec/protocol.txt	Sun Jan 05 16:28:53 2020 +0100
@@ -0,0 +1,9 @@
+messages.csv:
+ - list of message types and their parameters
+
+protocol.csv:
+ - list of allowed responses / interactions
+ - label + = message can repeat but will be sent at least once
+ - label * = message can repeat but can be also completely skipped
+ - error message can be sent as a response to any message and terminates the process
+ - warning message can be sent as a response to any message, but does not affect the workflow (just causes e.g. printing a warning to STDERR)