diff --git a/_includes/machine-command.html b/_includes/machine-command.html
index 7422e04ad..b81ce3811 100644
--- a/_includes/machine-command.html
+++ b/_includes/machine-command.html
@@ -2,15 +2,21 @@
 
 As discussed in /_posts/2017-01-03-pdp-11-tutorials.md, when a page (usually part of a tutorial)
 wants to create a control that tests some feature of a machine, the page will define a machine command
-using a Liquid-style include that looks like:
+using a Liquid-style include that looks like this:
 
     {% include machine-command.html type='button' label='Try It!' machine='vt100' component='Keyboard' command='sendString' value='Hello World' %}
 
-and which should generate something like:
+and which should generate something like this:
 
     <button type="button" onclick="commandMachine('vt100','Keyboard','sendString','Hello World')">Try It!</button>
 
-Well, that's us.  So let's do it!
+Alternatively, if the command parameter is the name of a command string in the page's Front Matter, then this:
+
+    {% include machine-command.html type='button' label='Try It!' machine='vt100' component='Keyboard' command='scriptName' %}
+
+should generate something like this:
+
+    <button type="button" onclick="commandMachine('vt100','Keyboard','script','...')">Try It!</button>
 
 {% endcomment %}
-{% if include.type == "button" %}<button type="button" onclick="commandMachine('{{ include.machine }}','{{ include.component }}','{{ include.command }}','{{ include.value }}')">{{ include.label }}</button>{% else %}<!-- Unrecognized machine control type: {{ include.type }} -->{% endif %}
+{% if page.commands[include.command] != nil %}{% assign machine_command = "script" %}{% capture command_value %}{{ page.commands[include.command] | replace:'"','&quot;' }}{% endcapture %}{% else %}{% capture machine_command %}{{ include.command }}{% endcapture %}{% capture command_value %}{{ include.value }}{% endcapture %}{% endif %}{% if include.type == "button" %}<button type="button" onclick="commandMachine('{{ include.machine }}','{{ include.component }}','{{ machine_command }}','{{ command_value }}')">{{ include.label }}</button>{% else %}<!-- Unrecognized machine control type: {{ include.type }} -->{% endif %}
diff --git a/devices/pdp11/machine/1170/panel/debugger/xxdp/README.md b/devices/pdp11/machine/1170/panel/debugger/xxdp/README.md
index 115bd5dc7..dd4bade4a 100644
--- a/devices/pdp11/machine/1170/panel/debugger/xxdp/README.md
+++ b/devices/pdp11/machine/1170/panel/debugger/xxdp/README.md
@@ -14,10 +14,10 @@ machines:
     sticky: top
 commands:
   bootXXDP: |
-    select rl11 listDrives RL0
-    select rl11 listDisks "XXDP+ Diagnostics"
-    load rl11
-    boot rl11
+    select rl11 listDrives RL0;
+    select rl11 listDisks "XXDP+ Diagnostics";
+    click rl11 loadDisk;
+    click rl11 bootDisk
 ---
 
 This machine is ready to boot [XXDP+ Diagnostics](/disks/dec/rl02k/xxdp/) ("BOOT RL0") and run
diff --git a/modules/shared/es6/component.js b/modules/shared/es6/component.js
index a16547255..a56acd220 100644
--- a/modules/shared/es6/component.js
+++ b/modules/shared/es6/component.js
@@ -105,7 +105,9 @@ class Component {
         this.name = parms['name'];
         this.comment = parms['comment'];
         this.parms = parms;
+
         this['exports'] = {};
+        this['bindings'] = {};
 
         var i = this.id.indexOf('.');
         if (i < 0) {
@@ -129,7 +131,6 @@ class Component {
 
         this.fnReady = null;
         this.clearError();
-        this.bindings = {};
         this.bitsMessage = bitsMessage || 0;
 
         /** @type {Object|null} controlPrint is the HTML control, if any, that we can print to */
diff --git a/modules/shared/lib/sticky.js b/modules/shared/lib/sticky.js
index 3b8d3b41a..a36a2d90d 100644
--- a/modules/shared/lib/sticky.js
+++ b/modules/shared/lib/sticky.js
@@ -112,15 +112,19 @@ function commandMachine(idMachine, sComponent, sCommand, sValue)
     if (window.findMachineComponent) {
         var component = window.findMachineComponent(idMachine, sComponent);
         if (component) {
-            var exports = component['exports'];
-            if (exports) {
-                var fnCommand = exports[sCommand];
-                if (fnCommand) {
-                    //noinspection JSUnresolvedFunction
-                    if (!fnCommand.call(component, sValue)) {
-                        window.alert("Error calling " + idMachine + "." + sComponent + "." + sCommand + "(" + sValue + ")");
+            if (sCommand == "script") {
+                window.alert("script(" + sValue + ")");
+            } else {
+                var exports = component['exports'];
+                if (exports) {
+                    var fnCommand = exports[sCommand];
+                    if (fnCommand) {
+                        //noinspection JSUnresolvedFunction
+                        if (!fnCommand.call(component, sValue)) {
+                            window.alert("Error calling " + idMachine + "." + sComponent + "." + sCommand + "(" + sValue + ")");
+                        }
+                        return;
                     }
-                    return;
                 }
             }
         }