hello_world.mlm

// You may run this MLM with: $ arden2bytecode -r hello_world.mlm

/*
 * The maintenance category covers general information used for developing
 * this Medical Logic Module (MLM).
 */
maintenance:
    title: Hello World;;
    mlmname: hello_world;;
    arden: Version 2.5;;
    version: 1.81;;
    institution: arden2bytecode authors;;
    author: Hannes Flicka;;
    specialist: Mike Klimek;;
    date: 2016-12-07;;
    validation: testing;;

/*
 * This category contains additional metadata about the medical knowledge
 * contained in this module.
 */
library:
    purpose: Demonstration of Arden Syntax;;
    explanation: Prints 'Hello World!';;
    keywords: hello world; example; Arden Syntax;;
    citations: ;;
    links: 'https://plri.github.io/arden2bytecode/docs/';;

// This section contains - among other stuff - the actual program logic.
knowledge:
    type: data_driven;;

    data:
        // Define the greeting variable to be the string "Hello world!"
        LET greeting BE "Hello, World!";
    ;;

    evoke:
        // This MLM is called directly, so no evoke statement is required.
    ;;

    logic:
        // The 'CONCLUDE' statement decides whether to execute the action slot.
        CONCLUDE TRUE;
    ;;

    action:
        // The actual output.
        WRITE greeting;
    ;;

end: