| ⇢ | A | CToolIntroController added |
| ⇢ | B | CourseHome::replaceTextWithToolUrls() added | |
| ⇢ | B | CourseHome::availableTools() added | |
| ⇢ | A | CToolIntroController::updateAction() added | |
| ⇢ | A | CToolIntroController::indexAction() added | |
| ⇢ | A | CToolIntroController::createAction() added | |
| ⇢ | A | CToolIntroController::deleteAction() added | |
| ⇢ | A | CToolIntro::setTool() added | |
| ⇢ | A | Thematic::setCourseIntId() added | |
| ⇢ | A | CToolIntro::getTool() added | |
| A | ↘ | F | Display::return_introduction_section() got worse |
| A | ↛ | CToolIntro::setId() removed |