Reference: attributes

begin attribute

begin
Type	Element	Description	Use
	slur	Beginning of a music event	To indicate the beginning point of an event

The beginning of an event indicated with the begin attribute is always accompanied by closing the event with the end attribute.

Example
Markup	What happens...
<bar 1><slur begins>G</slur> A:4 </bar> <bar 2><slur ends>G</slur> A:4 </bar>	A slur begins on the G note in bar 1 and ends on the G note in bar 2
<bar 6>F G (A F C):16 G <beat 3:2><slur id="5" begin>	A slur with id number "5" begins on the 2nd tick of the 3rd beat in bar 6