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# Add Selected Species and Local Optimization

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

## OCCURRENCE

### ARB_NT/Tree/Parsimony/Tree/Add Selected Species + NNI

## DESCRIPTION

### The 'selected species' (see ´Glossary´) is positioned within the current tree according to maximum parsimony criteria. Local optimization of the current tree is performed by swapping subtrees which are separated by not more than one edge.

## NOTES

### The current parsimony value (number of base changes needed) is displayed after the 'Current Par' prompt in the upper part of the 'ARB_PARSIMONY' window and the 'Message' window (pops up while calculating).

## EXAMPLES

### None

## WARNINGS

### No global optimization is performed

## BUGS

### No bugs known