| Name | Kind | Description |
| baseType | operation | returns the type on which the class (in fact a typedef) is based |
| behavior | operation | return the behavior, may be an activity or a state machine |
| behavior | operation | return the behavior |
| bouml | class | |
| buffer_in | attribute | |
| buffer_in_end | attribute | |
| buffer_in_size | attribute | |
| buffer_out | attribute | |
| buffer_out_size | attribute | |
| bye | operation | must be called just before the disconnexion |
| byeCmd | attribute |