# Program start

There is a extra program icon to start "dune4kids" on some systems (Linux KDE/Gnome und SGI IRIX 4dwm). It looks like this:
On systems like Micro$oft Windows or MacOSX there is only a (other) program icon:
Usually, the program of this icon starts the full version on white_dune (with too much icons and too much menus) on first usage.
First, the program must be switched to the dune4kids user interface.
Click here to find out, how to switch to the right user interface.

## What can be done, when the program crashes ?

With a little luck it is possible to reload the last situation, when you find a new ".dune_crash" file in the list of recent files in the "File" menu.

# Navigation

Navigation is the movement in the 3D model.
This is important, cause you can easily in or behind your work and see nothing on screen.
When you see nothing, there are 2 ways to continue, often both ways are used together:

- Go backward
  You can go forward and backwards by pressing the shift key on the keyboard and the left button of the mouse. In the "Examine" mode (when the icon _____ is pressed) this also works with the middle botton of the mouse. If your mouse has a mousewheel instead of a middle button, you must press down the middle mousewheel.
- Turn the 3D World
  When you press together the left mouse button and the "Control" key on the keyboard ("ctrl" on a english keyboard) you can turn the whole 3D-world around you. This is usually used to look to a new created object near to you from all sides, but do not help, when you are into the void.
  But keep in mind, that the content can be not only be hidden behind you, it can be also above, below, left or right.
  You need to turn around a lot to find your object.

Additionally, there is the possibility to press the left mouse button, the "shift" and the "control" key together. In this case, it is possible to move in the direction of the screen surface (up, down, left or right).
After you find the object and moved near to it, you should press again the "Examine" icon in order to continue to work normally.
You should also select the object and press the icon , so you can turn the object as usual.

# Icons for changes

To show how things can be changed, a box is created.
Icons to change whole objects:

- Move:
- Rotate:
- Scale up/down:
- Uniform scale up/down:
- Move turnpoint:

With small white boxes the objects itself can be changed. With the arrow icons the direction can be driven.
For example, if the green arrow has been pressed
a small white box can only be moved in the direction of the green arrow.
.
In the same way, as you can grab arrows on their base instead of their top to move them into a plain, you can also press down two arrow icons together to move a small white box in a plain.

# Example for animation

A lot of commands only work, when the right thing is selected (clicked with the mouse)
In this case, a "Transform" must be selected.

# Example for modelling