int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
bool AttachmentIsValid(int attachment);
int GetNumberOfAttachments();
// Invoke editor on CTRL-right click
int nth = 0, int no_arcs = 1, wxLineShape *line = NULL);
bool AttachmentIsValid(int attachment);
int GetNumberOfAttachments();
// Invoke editor on CTRL-right click