Slicer  4.8
Slicer is a multi-platform, free and open source software package for visualization and medical image computing

Widgets → Logic Relation

File in Modules/Loadable/Terminologies/WidgetsIncludes file in Modules/Loadable/Terminologies/Logic
qSlicerTerminologyNavigatorWidget.hvtkSlicerTerminologyEntry.h
qSlicerTerminologySelectorButton.hvtkSlicerTerminologyEntry.h