The selection control allows to "select" objects in Anatomist windows by clicking on them in 3D views. Selected objects become highlighted, and can then be used for specific operations.

The default highlighting of selected object changes their color in 3D visualizations, using a red color (by default), and displays a bounding box wireframe around selected objects. Alternative selection highlighting can be chosen, either in the "graph parameters" windows (accessed via the menus of the main window), or via extension modules, in a specific tools panel in the controls parameters box (accessed via the F1 key in 3D views), in the "selection" tab. Highlighting can then be displayed by outlining selected objects, an/or by drawing a parallelepipedic box around seleced objects.

When selecting graph nodes, specific options can decide whether to also show graph relations attached to selected nodes. These are controlled in the selection tab of the controls tools window. In "Basic" mode, relations are not handled by the selection control. In "Intersection" mode, relations linking selected nodes are displayed. In "Union" mode, relations attached to any of the selected nodes are displayed. This graph relations display mode can be useful for complex graphs carrying multimodal structural relational data, such as fibers connecting cortical regions.

The selection control also brings access to a ROI and sulci renaming tool: labels can be picked on a selected "graph" node (using the space key), and pasted onto other selected nodes (from the same graph or another one), using the ctrl+return key combination. The current which has been copied is visible on the top toolbar button.

The A key activates (or desactivates) a "graph annotation" mode, which displays the labels of the regins in a graph as text in 3D.

Figure 6.3. Graph "annotation" mode