The following editions of Working Model are available:

	Opens files created by
Edition	Demo files	Homework edition	Full edition	Developer edition
Demo	X
Textbook	X			X
Homework	X	X	X	X
Full Professional	X	X	X	X
Full Educational	X	X	X	X
Developer	X	X	X	X

Demo edition

• Enter Demo as the serial number
• Can open only files that are demo-mastered by Design Simulation Technologies, Inc.
• Files cannot be saved or copied
• Cannot export movies or data
• Click
here to request an evaluation version
• Available in 7 international languages

Textbook edition

• Licensed with a Developer edition
• Can open only files that are demo-mastered byDesign Simulation Technologies, Inc.or created by a Developer edition
• Files cannot be saved or copied
• Limited printing and exporting capabilities
• Created for textbooks, not instructors
• CD must be in CD-ROM drive for program to run
• Available in 7 international languages

Homework edition

• Available only to students currently enrolled in an accredited school that has at least a 10-user site license
• Full use capability
• CD must be in CD-ROM drive for program to run
• Does not include user manuals or technical support and must be installed on student-owned computers, not on school equipment
• Call 1-800-766-6615 for pricing information
• Available in 7
international languages

Full Educational edition

• Full use capability
• Manual lookup word at first launch
• Allows saving and copying files
• Allows exporting data
• Click here for pricing information
• Available in 7 international languages

Full Professional edition

• Requires a hardware key (dongle)
• Allows full professional use of Working Model
• Click here for pricing information
• Available in 7 international languages

Developer edition

• Available to publishers and curriculum developers whose customer base is on a state-wide or country-wide level
• Sold with a specified number of textbook editions (minimum of 500 textbook editions)
• Full use capability
• Capability to create files that can be opened by:
  • Textbook edition
  • Homework edition
  • Full edition
  • Developer edition
• Available in 7 international languages