diff --git a/app/lib/exec/Readme.md b/app/lib/exec/Readme.md
new file mode 100644
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+++ b/app/lib/exec/Readme.md
@@ -0,0 +1,15 @@
+
+
+## exec(cmd, arg, opts) ⇒ Promise.<{stdout: string, stderr: stderr}>
+Promisified child_process.exec
+
+**Kind**: global function
+
+| Param | Type | Description |
+| --- | --- | --- |
+| cmd | | |
+| arg | | |
+| opts | | See child_process.exec node docs |
+| opts.stdout | stream.Writable | If defined, child process stdout will be piped to it. |
+| opts.stderr | stream.Writable | If defined, child process stderr will be piped to it. |
+
diff --git a/app/lib/mscript/Readme.md b/app/lib/mscript/Readme.md
index 93bfafb..cfb7fdb 100644
--- a/app/lib/mscript/Readme.md
+++ b/app/lib/mscript/Readme.md
@@ -3,134 +3,177 @@
## lib/mscript
* [lib/mscript](#module_lib/mscript)
- * [~mscript](#module_lib/mscript..mscript)
- * [.arg(shrt, lng)](#module_lib/mscript..mscript.arg) ⇒ boolean
- * [.arg_pos(shrt, lng)](#module_lib/mscript..mscript.arg_pos) ⇒ boolean
- * [.state_clear()](#module_lib/mscript..mscript.state_clear)
- * [.alts_unique()](#module_lib/mscript..mscript.alts_unique)
- * [.interpret()](#module_lib/mscript..mscript.interpret)
- * [.last_loop()](#module_lib/mscript..mscript.last_loop)
- * [.parent_loop()](#module_lib/mscript..mscript.parent_loop)
- * [.state_update()](#module_lib/mscript..mscript.state_update)
- * [.str_to_arr()](#module_lib/mscript..mscript.str_to_arr)
- * [.light_state()](#module_lib/mscript..mscript.light_state)
- * [.light_to_arr()](#module_lib/mscript..mscript.light_to_arr)
- * [.loop_count()](#module_lib/mscript..mscript.loop_count)
- * [.fail()](#module_lib/mscript..mscript.fail)
- * [.output()](#module_lib/mscript..mscript.output)
- * [.init()](#module_lib/mscript..mscript.init)
- * [.tests()](#module_lib/mscript..mscript.tests)
+ * [~Mscript](#module_lib/mscript..Mscript)
+ * [.clear()](#module_lib/mscript..Mscript+clear)
+ * [.interpret()](#module_lib/mscript..Mscript+interpret)
+ * [.basic_cmd()](#module_lib/mscript..Mscript+basic_cmd)
+ * [.new_loop()](#module_lib/mscript..Mscript+new_loop)
+ * [.end_loop()](#module_lib/mscript..Mscript+end_loop)
+ * [.move_cam()](#module_lib/mscript..Mscript+move_cam)
+ * [.move_proj()](#module_lib/mscript..Mscript+move_proj)
+ * [.set_state()](#module_lib/mscript..Mscript+set_state)
+ * [.last_loop()](#module_lib/mscript..Mscript+last_loop)
+ * [.parent_loop()](#module_lib/mscript..Mscript+parent_loop)
+ * [.loop_count()](#module_lib/mscript..Mscript+loop_count)
+ * [.fade()](#module_lib/mscript..Mscript+fade)
+ * [.fade_count()](#module_lib/mscript..Mscript+fade_count)
+ * [.fade_start()](#module_lib/mscript..Mscript+fade_start)
+ * [.fade_end()](#module_lib/mscript..Mscript+fade_end)
+ * [.update()](#module_lib/mscript..Mscript+update)
+ * [.str_to_arr()](#module_lib/mscript..Mscript+str_to_arr)
+ * [.light_to_arr()](#module_lib/mscript..Mscript+light_to_arr)
+ * [.light_state()](#module_lib/mscript..Mscript+light_state)
+ * [.fail()](#module_lib/mscript..Mscript+fail)
-
+
-### lib/mscript~mscript
-object mscript
+### lib/mscript~Mscript
+class Mscript
-**Kind**: inner constant of [lib/mscript](#module_lib/mscript)
+**Kind**: inner class of [lib/mscript](#module_lib/mscript)
-* [~mscript](#module_lib/mscript..mscript)
- * [.arg(shrt, lng)](#module_lib/mscript..mscript.arg) ⇒ boolean
- * [.arg_pos(shrt, lng)](#module_lib/mscript..mscript.arg_pos) ⇒ boolean
- * [.state_clear()](#module_lib/mscript..mscript.state_clear)
- * [.alts_unique()](#module_lib/mscript..mscript.alts_unique)
- * [.interpret()](#module_lib/mscript..mscript.interpret)
- * [.last_loop()](#module_lib/mscript..mscript.last_loop)
- * [.parent_loop()](#module_lib/mscript..mscript.parent_loop)
- * [.state_update()](#module_lib/mscript..mscript.state_update)
- * [.str_to_arr()](#module_lib/mscript..mscript.str_to_arr)
- * [.light_state()](#module_lib/mscript..mscript.light_state)
- * [.light_to_arr()](#module_lib/mscript..mscript.light_to_arr)
- * [.loop_count()](#module_lib/mscript..mscript.loop_count)
- * [.fail()](#module_lib/mscript..mscript.fail)
- * [.output()](#module_lib/mscript..mscript.output)
- * [.init()](#module_lib/mscript..mscript.init)
- * [.tests()](#module_lib/mscript..mscript.tests)
+* [~Mscript](#module_lib/mscript..Mscript)
+ * [.clear()](#module_lib/mscript..Mscript+clear)
+ * [.interpret()](#module_lib/mscript..Mscript+interpret)
+ * [.basic_cmd()](#module_lib/mscript..Mscript+basic_cmd)
+ * [.new_loop()](#module_lib/mscript..Mscript+new_loop)
+ * [.end_loop()](#module_lib/mscript..Mscript+end_loop)
+ * [.move_cam()](#module_lib/mscript..Mscript+move_cam)
+ * [.move_proj()](#module_lib/mscript..Mscript+move_proj)
+ * [.set_state()](#module_lib/mscript..Mscript+set_state)
+ * [.last_loop()](#module_lib/mscript..Mscript+last_loop)
+ * [.parent_loop()](#module_lib/mscript..Mscript+parent_loop)
+ * [.loop_count()](#module_lib/mscript..Mscript+loop_count)
+ * [.fade()](#module_lib/mscript..Mscript+fade)
+ * [.fade_count()](#module_lib/mscript..Mscript+fade_count)
+ * [.fade_start()](#module_lib/mscript..Mscript+fade_start)
+ * [.fade_end()](#module_lib/mscript..Mscript+fade_end)
+ * [.update()](#module_lib/mscript..Mscript+update)
+ * [.str_to_arr()](#module_lib/mscript..Mscript+str_to_arr)
+ * [.light_to_arr()](#module_lib/mscript..Mscript+light_to_arr)
+ * [.light_state()](#module_lib/mscript..Mscript+light_state)
+ * [.fail()](#module_lib/mscript..Mscript+fail)
-
+
-#### mscript.arg(shrt, lng) ⇒ boolean
-Check for the presence of specific arguments in process
-argv
+#### mscript.clear()
+Clear the state of the script
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-**Returns**: boolean - Is flag present
-
-| Param | Type | Description |
-| --- | --- | --- |
-| shrt | string | Short version of argument or flag |
-| lng | string | Long version of argument or flag |
-
-
-
-#### mscript.arg_pos(shrt, lng) ⇒ boolean
-Check for the position of specific arguments in process
-argv
-
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-**Returns**: boolean - Position of arg or flag, for locating input
-
-| Param | Type | Description |
-| --- | --- | --- |
-| shrt | string | Short version of argument or flag |
-| lng | string | Long version of argument or flag |
-
-
-
-#### mscript.state_clear()
-Clear the state object
-
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.alts_unique()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
#### mscript.interpret()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+Main function, accepts multi-line string, parses into lines
+and interprets the instructions from the text. Returns an array
+of steps to be fed into the mcopy.
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.basic_cmd()
+Apply a basic two character command
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.new_loop()
+Start a new loop
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.end_loop()
+Close the most recent loop
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.move_cam()
+Move camera to explicitly-defined frame
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.move_proj()
+Move projector to explicitly-defined frame
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.set_state()
+Set the state of either the cam or projector
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
#### mscript.last_loop()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+Return the last loop
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
#### mscript.parent_loop()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+Return the second-last loop
-#### mscript.state_update()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.str_to_arr()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.light_state()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.light_to_arr()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
#### mscript.loop_count()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+Extract the loop count integer from a LOOP cmd
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.fade()
+Execute a fade of frame length, from color to another color
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.fade_count()
+Extract the fade length integer from a FADE cmd
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.fade_start()
+Extract the start color from a string
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.fade_end()
+Extract the end color from a string
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.update()
+Increase the state of a specific object, such as the camera/projector,
+by the value defined in val
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.str_to_arr()
+Split string on command, extract any integers from string
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.light_to_arr()
+Split a string on a command to extract data for light array
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
+
+#### mscript.light_state()
+Split a string to extract an rgb color value
+
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)
+
#### mscript.fail()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
+Throw an error with specific message
-#### mscript.output()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.init()
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
-
-
-#### mscript.tests()
-Legacy tests. To be deprecated in future releases.
-
-**Kind**: static method of [mscript](#module_lib/mscript..mscript)
+**Kind**: instance method of [Mscript](#module_lib/mscript..Mscript)