void set_effect_colour (dcp::Colour);
void unset_effect_colour ();
void set_line_spacing (double s);
void set_effect_colour (dcp::Colour);
void unset_effect_colour ();
void set_line_spacing (double s);
boost::optional<dcp::Colour> _colour;
boost::optional<dcp::Effect> _effect;
boost::optional<dcp::Colour> _effect_colour;
/** scaling factor for line spacing; 1 is "standard", < 1 is closer together, > 1 is further apart */
double _line_spacing;
boost::optional<dcp::Colour> _colour;
boost::optional<dcp::Effect> _effect;
boost::optional<dcp::Colour> _effect_colour;
/** scaling factor for line spacing; 1 is "standard", < 1 is closer together, > 1 is further apart */
double _line_spacing;