Batch                     Boolean                   Builder  
BatchUtil                 BooleanProp               BuiltinOps  
BiFeedbackVBT             BooleanVBT                BuiltinTypes  
BinaryTree                BorderedFeedbackVBT       Bundle  
BitSize                   BorderedVBT               ButtonDLE  
BlockStmt                 BoxGO                     ButtonVBT  
Bool                      Browser                   ByteSize