| More docs on the ARB website. See also index of helppages. Last update on 24. Jun 2017 .

Main topics:

- ARB: a Short Introduction
- Glossary
- ARB Parsimony

Related topics:

- Matrices, Masks, Profiles V1.0
- ARB_PHYLO - Create filters by base frequency
- Select Filter

# Starting ARB Parsimony

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

## OCCURRENCE

### ARB_NT/Tree/Add species to existing tree/Parsimony ...

## DESCRIPTION

### In this release, 'ARB Parsimony' cannot be used to reconstruct new trees.

### Existing trees can be optimized at different levels (depths) according to maximum parsimony criteria.

### New sequences (species) can be placed rapidly into an existing tree. This can be done without changing that tree or allowing optimization at different levels according to maximum parsimony criteria including the new information for calculation.

### Filters for the in- or exclusion of alignment columns ('ARB_NT/SAI; ARB_NT/Tree/Dist Matrix) can be selected.

### After selecting one of the parsimony items in 'Tree/Add species to existing tree' the 'SET PARSIMONY OPTIONS' window appears:

- Select the tree (to be modified) from the 'Tree:' subwindow.
- Select an 'alignment' (see ´Glossary´) from the 'alignment:' subwindow.
- To select a filter display the 'Select Filter' window pressing the button after the 'Filter:' prompt (see ´Select Filter´).
- Press the <GO> button to display the 'ARB_PARSIMONY' window.

## NOTES

### None

## EXAMPLES

### None

## WARNINGS

### None

## BUGS

### No bugs known