-- [ZFD FILE FORMAT] --

[<device>,<device>]

-- <device> format --
  {
    name=<name>
    commands=[<command>,<command>]
  }
--
*name: string referring to client name of the device

<command> format
  {
    type=<type>
    shell=<shell command>
    <tag>=<value>
    <tag>=<value>
    ...
  }
--
*type: type of the signal: note/controller/pitch/system/connect/disconnect
  > mandatory
*shell: shell command to be executed
  > mandatory

Shell command can be concatenated with \"\" or ''
see --command-tags for optional command tags