private void DumpText(TextWriter writer)
{
// write global
writer.WriteLine("[Global]");
GlobalBindings
.SelectMany(s => s.Value)
.ForEach(b => writer.WriteLine(b.ToString()));
writer.WriteLine("[Timeline]");
TimelineBindings
.SelectMany(s => s.Value)
.ForEach(b => writer.WriteLine(b.ToString()));
writer.WriteLine("[Input]");
InputBindings
.SelectMany(s => s.Value)
.ForEach(b => writer.WriteLine(b.ToString()));
writer.WriteLine("[Search]");
SearchBindings
.SelectMany(s => s.Value)
.ForEach(b => writer.WriteLine(b.ToString()));
}