# Tool Bar

The tool bar at the top of the window provides short-cuts for common operations. The models, methods, and simulation output comprise the application state. Each of these are loaded/stored when you open/save a file. With the file operations you can clear the state , open a Cain file or import an SBML file , save the state , save to a different file name , or quit .

You can seed the random number generator by clicking the die icon and entering an unsigned 32-bit integer. (An integer between 0 and 4294967295, inclusive.) This number is used to generate new states for the Mersenne Twister. You won't ordinarily need this feature. It is primarily used for testing and comparing simulation methods.

In the final group you can edit the application preferences or open the help browser . In the application preferences you can set the compiler options for Mac OS X or Linux/Unix.