Hi, I would like to know why OneToManyRelations are not as configurable as MultipleOptionDescriptions. It would be cool to get #beSortable, #beOrdered, #beRemoveable... Is it just a problem of time or something difficult to implement ? If you take the Magritte exercices, a person manager is developed. The problem is: why is the PersonManager a WAComponent ? Won't it be more interesting if we get a Model and not a component ? The model would have just one description ; something like: descriptionPersons ^ (MAOneToManyRelationDescription auto: 'persons' label: 'Persons') classes: (Array with: MAPersonModel); default: Array new; beOrdered; "to get a 'up' and a 'down' command on each line" beRemoveable; "to get a 'remove' command on each line" beEditable; "to get a 'edit' command on each line" yourself Bye