There are numerous editing operations that can be performed on a model. Most of these functions can be accessed in the top level menu of the main window.
Deletion
Deletion of sections of the model is accomplished by selecting the desired vertices, and then hitting either the Delete key or using the menu item .
IMPORTANT: The current tool must be the neurite tool 
for deletion of vertices to occur.
Example:
1) Vertices to be deleted have been selected using the neurite tool. See image below.
2) With the neurite tool active, press the Delete key and the section is removed. See image below.
TIP: To delete the entire model, select from the main menu. You can also accomplish this by using the key combination X+N. Deletion of the whole model will occur no matter what tool is active. Since this is a potentially risky operation, a confirmation window will appear.
Joining and Unjoining
Another common editing operation performed on a model is to join or unjoin vertices. This amounts to adding or removing a connection (edge) between a selected pair of vertices. If the selected vertices already have a connection, it is removed. Otherwise a connection is created. You may use either the J key or menu item to perform this operation.
IMPORTANT: There are 2 restrictions for this operation to occur. The current tool must be the
neurite tool and exactly 2 vertices must be selected.
Example:
1) 2 vertices have been selected using the neurite tool. Since they do not yet have a connection between them, one will be created. See image below.
2) With the neurite tool active, press the J key and a connection is created. See image below.
3) 2 vertices have been selected using the neurite tool. In this case they are the same two vertices as before so they now have a connection between them. See image below.
4) With the neurite tool active, press the J key and the connection is removed. See image below.
Setting the Soma
NeuronStudio selects one vertex from each connected component of the model to be the origin (soma). A connected component is made up of vertices where a path (series of connections) can be followed to reach every other vertex in that component. For traced components, NeuronStudio selects the vertex with the largest radius to be the soma. You may at any time reset which vertex is the soma by selecting exactly one vertex and using the menu item .
TIP: NeuronStudio colorizes the vertices of the model according to their "type". For example the default color for a soma vertex is red.
IMPORTANT: Only exactly 1 vertex must be selected for this operation to occur.
Example:
1) A small component with one vertex selected using the neurite tool. The current origin vertex is colored in red. See image below.
2) Select from the main menu. Note how the old origin is cleared and reset as the selected vertex. See image below.
Changing Radii
You may also choose to increase or decrease the radius of any number of selected vertices (by 5% of its current size). This can be accomplished by using the up ↑ or down ↓ arrow keys.
- up ↑ is used to increase radii.
- down ↓ is used to decrease radii.
IMPORTANT: The current tool must be the neurite tool
to be able to change radii.
Example:
1) A number of vertices selected using the neurite tool. See image below.
2) up ↑ key pressed a number of times. All radii have proportionately increased. See image below.
3) down ↓ key pressed a number of times. All radii have proportionately decreased. See image below.
Translation and Rotation
To provide a full range of editing possibilities for the model, repositioning selected vertices is also
provided. You may alter the position of any selected vertices by a translation or rotation operation. The first step is to select
the vertices using the neurite tool. Next, switch modes to the move tool 
and click
and drag while holding the Ctrl or Shift keys. Rotation occurs around
the center of mass of the selected vertices.
- Ctrl is used to translate.
- Shift is used to rotate.
IMPORTANT: The current tool must be the move tool
to be able to translate or rotate vertices.
Example:
1) A number of vertices have been selected using the neurite tool. Now switch to the move tool. See image below.
2) While holding the Ctrl key, click and drag in the display window. Note how the vertices are translated. A yellow rectangle is drawn around the vertices to indicate translation. See image below.
3) While holding the Shift key, click and drag in the display window. Note how the vertices are rotated. A yellow circle is drawn around the vertices to indicate rotation. See image below.
You may also use the magnet tool 
to quickly translate
vertices of the model. See also Selection and Deselection for an example.
IMPORTANT: If there are no intersecting vertices when the magnet tool is clicked and dragged within the display, then translation of the display will occur.
TIP: Pressing the G key will switch to the magnet mode as well.
Hiding and Unhiding
Finally, the last edit operation is the ability to hide selected vertices. This can be used to reduce the visual load of a complex model, or to allow occluded sections of the model to show through. Select from the menu to hide the selected vertices. Use the menu item at any time to show all previously hidden vertices.
IMPORTANT: The current tool must be the neurite tool
for hiding or unhiding to occur.
Example:
1) A number of vertices selected using the neurite tool. See image below.
2) selected from the menu. The selected vertices now become hidden. See image below.
3) selected from the menu. Note how all previously hidden vertices are shown again. See image below.
