# APBS 0.3.1 (2004-04)¶

## New features¶

• New APBS tutorial
• New tools/python/vgrid/mergedx.py script to merge dx files generated from parallel APBS runs back into a single dx file.

## Bug fixes¶

• Fixed bug in parallel calculations where atoms or points on a border between two processors were not included. Modified setup algorithm for parallel calculations to allow partitions in order to obtain grid points and spacing from the global grid information.
• Modified extEnergy function to work with parallel calculations, giving better accuracy.