We have recently released a first implementation of ties.

What are ties

A tie is a link between two notes of the same pitch, that add their duration. A half note tied with a quarter note last the same duration than a dotted half note.
half tied with a quarter is equivalent to a dotted half

Limitations

Ties is the main mean to create notes that last more than one measure.
However our first implementation only supports ties within a measure.
Cross-measure ties will come in a future release.

Drawing

A tie is a curve that connect two notes heads of the same pitch.

Single notes

Ties curve always on the side opposed to the stem.
tied notes bellow the middle line curve downward tied notes above the middle line curve upward

2 notes chords

Opposite ties curves always on the same side than the stem.
As you can see, ties must not cross the stem.
two ties on opposite direction, stem up two ties on opposite direction, stem down

bigger chords

External ties must be in opposites directions. Internal ties at or above the middle line must curve upward, and the ones lower must
curve downward.
big chord

chord with seconds

The theory says that the ties of a second pair should be opposed. Our
implementation do not behave this way. We instead shift the ties extremities according to the notes positions. But the result is a bit disgracefull.
chord with tied seconds

In a future implementation, we will try to follow the theory, but we wonder how case like this should be handled
chord full of tied seconds

Usage

Here is the button to tie two note heads.
tie button

This action ties a note with the note on its right.
before tying after tying

The notes to be tied must be of the exact same pitch. Thus this
configuration will not work
Impossible to tie a natural note with a flatted note