The following packages still have the DHB part in their names:

• Math-DHB-Numerical
• Math-Tests-DHB-Numerical
• Math-Tests-DHB-wk

We should change DHB to PM.
However (!), it would be much better to come up with better names for these packages. At this moment the naming is very inconsistent. For example, the tests for PMMatrix are in package Math-Tests-Matrix and the tests for PMVector are in Math-Tests-DHB-Numerical.