Key Features

Computational Capabilities
- Systems of nonlinear ODEs and one-dimensional PDEs (by the method of lines)
- Systems of nonlinear algebraic/ transcendental equations (by the Davidenko and steepest descent methods)
- Systems of differential and algebraic equations (DAEs)
- Derivatives and one-dimensional integrals
Spatial Discretization
- Finite difference approximations for first-order to fourth-order derivatives
- Second-order to tenth-order correct centered approximations
- First-order to fourth-order correct non-centered (upwind) approximations
Time Integration
- Implicit and explicit (stiff and non-stiff) integrators based on variable-step Backward Differentiation Formulas (BDFs) and Runge-Kutta methods
- Integration step size adjusted in accordance with user-specified absolute and relative error tolerances
- Monitor progress of solution; pause and resume integration
- Initial condition from previous solution
- Double precision arithmetic
Input Language
- Input statements closely resemble the mathematical statement of the problem
- Problem set up in just a few minutes, flexible syntax rules
- Extensive functionality with few, easy to remember special operators (e.g., u_t for du/dt)
- An assortment of intrinsic functions
- No need to write subroutines, define arrays, or subscript variables
- No compiler required
- Thorough syntax checking prior to problem execution

Output
- Access to all variables for tabular and graphical output
- Flexible templates for configuring output
- Full spreadsheet functionality for additional post-processing
- Wide range of formatting options for tables and charts, including 3D views
- Exporting/importing capabilities to share tables and charts with other applications

System Requirements
- RAM memory requirements: 8 MB minimum
- Hard disk space requirements: 10 MB
- MS Windows 3.0 minimum
- Hardware: 486 SX/33 MHz or better
Other
- Multiple Document Interface (MDI) GUI standard
- Extensive on-line Help with a tutorial, differential equations concepts, and detailed guidelines to specify parameters such as error tolerances and number of grid points