| More docs on the ARB website. See also index of helppages. Last update on 07. Sep 2018 .

Main topics:

- ARB: a Short Introduction
- Glossary
- NTREE MODES (general info)
- SPECIES INFORMATION

Related topics:

# GROUP MODE

- OCCURRENCE
- DESCRIPTION
- NOTES
- EXAMPLES
- WARNINGS
- BUGS

## OCCURRENCE

### ARB_NT and ARB_PARSIMONY: <GROUP> button in the left column

### F3 on the keyboard

## DESCRIPTION

### A group is a subtree with a name assigned to its root node. The 'GROUP MODE' allows display of subtrees (groups of species) as triangles (radial tree) or rectangles (dendrogram). You also can convert a subtree into a group.

### Click on the <GROUP> button of the 'ARB_NT' window or the 'F3' key on the keyboard to activate the 'GROUP MODE'. In the latter case, the cursor has to be placed within the tree display area.

### Group species:

Move the cursor to that internal node of the displayed tree (section) which defines the subtree and click on the left mouse button. The subtree-defining node is that located closest to the indicated root (open square) root of the whole tree which directly or indirectly connects all branches of the subtree.

### Ungroup species:

Press the left mouse button while the cursor is over the triangle of a group.

### Transform a subtree into a group and assign a name to it:

Proceed as described above using the right mouse button.

## NOTES

### None

## EXAMPLES

### None

## WARNINGS

### None

## BUGS

### No bugs known