local binding = buf:match('^%S+%s+(%S+)')
    app.Manifest[binding] = nil
    app.eval(binding..' = nil')  -- ignore errors which will likely be from keywords like `function = nil`
    local next_filename = app.versioned_filename(app.Next_version, binding)

    local definition_name = buf:match('^%S+%s+(%S+)')
    app.Manifest[definition_name] = nil
    app.eval(definition_name..' = nil')  -- ignore errors which will likely be from keywords like `function = nil`
    local next_filename = app.versioned_filename(app.Next_version, definition_name)

    table.insert(app.History, binding)

    table.insert(app.History, definition_name)

    local binding = buf:match('^%S+%s+(%S+)')
    app.send(app.get_binding(binding))

    local definition_name = buf:match('^%S+%s+(%S+)')
    app.send(app.get_binding(definition_name))

    for binding in buf:gmatch('%s+(%S+)') do
      print(binding)
      local val, _ = app.get_binding(binding)

    for definition_name in buf:gmatch('%s+(%S+)') do
      print(definition_name)
      local val, _ = app.get_binding(definition_name)

    local binding = cmd
    if app.Frozen_definitions[binding] then
      app.send('ERROR definition '..binding..' is part of Freewheeling infrastructure and cannot be safely edited live.')

    local definition_name = cmd
    if app.Frozen_definitions[definition_name] then
      app.send('ERROR definition '..definition_name..' is part of Freewheeling infrastructure and cannot be safely edited live.')

    local next_filename = app.versioned_filename(app.Next_version, binding)

    local next_filename = app.versioned_filename(app.Next_version, definition_name)

    table.insert(app.History, binding)
    app.Manifest[binding] = app.Next_version

    table.insert(app.History, definition_name)
    app.Manifest[definition_name] = app.Next_version