4 a very simple colors chart helps the user to know if a item is valid or not :
6 * In the Dataset tree view
8 - green square : valid objects (Dataset, Command, Concept ...)
9 - red square : unvalid objects
10 - **yellow square** : valid **Concept** the user must name
11 - green diamond : valid group keywords
12 - red diamond : unvalid group keywords
13 - green circle : valid keywords
14 - red circle : unvalid keywords
16 * In the input data form widget
17 - green circle : valid keywords or unvalid objects
18 - red circle : unvalid keywords or unvalid objects
22 - red is for unobserved rules
23 - black is for observed rules