[Vala] Privacy of signals

[Andreas Sliwka <andreas sliwka gmail com>]

Greetings,
  I stumbled over a question about signals, which neither Vala/Tutorial
nor Vala/Signals on live.gnome.org could answer me. 

  Consider the following code: 
     private signal void some_signal();

  What does the 'private' imply? Does it limit the who may connect to
this signal? Or rather who may fire it? Or both?

Best regards,

Andreas Sliwka