It is able to collapse the sequential rows. To collapse rows click on the Switch on/off collapsing main toolbar button:
![](/wiki/download/attachments/7438411/Collapsing Rows.png)
The triangle will appear near collapsed sequences. Click on the triangle to show the whole tree of the collapsed rows. Also, it is possible to control the collapsed group by a keyboard with a help of Right and Left keyboard arrows.
![](/wiki/download/attachments/7438411/Collapsing Rows_1.png)
To update the collapsed groups click on the corresponding main toolbar button.