private void LoadStage(StageDocument stage)
{
this.stage = stage;
this.Text = stage.Name + " Properties";
nameField.Text = stage.Name;
tilesetField.Text = stage.Tileset.FilePath;
if (stage.MusicIntro != null) introField.Text = stage.MusicIntro.Absolute;
if (stage.MusicLoop != null) loopField.Text = stage.MusicLoop.Absolute;
}