Elements of use case diagram: Actor. â¢ Actor is someone interacting with use case. (system function). Named by noun. â¢ Similar to the concept of user, but. a user can play different roles; (example: a prof. can be instructor and. researcher â plays 2 roles with two systems). â¢ Actor triggers use case. â¢ Actor has responsibility toward the system (inputs), and Actor have expectations from the system (outputs).
Related Manuals for Lenovo Laptop. Summary of Contents for Lenovo Laptop. Page 1: User Guide Lenovo User Guide Read the safety notices and important tips in the included manuals before using your computer. Page 2 Notes â¢ Before using the product, be sure to read Lenovo Safety and General Information Guide first.
At certain circumstances, you may need to restore your Lenovo laptop to factory settings. If your operating system gets corrupted or if system files get damaged due to viruses and malware, then you may need to get your Lenovo laptop restored to solve the issue. While restoring factory settings, you may lose your files.So, you need to use USB drives or optical discs to store your data and transfer them to another computer. Alternatively, you may use your network to transfer files. You may then restore the data back to your Lenovo laptop at your convenience.The following are the tips to restore Lenovo laptop to its default factory settings: 1  Using System Restore tool. 2  Lenovo Rescue and Recovery tool.ou may then restore the data back to your Lenovo laptop at your convenience. The following are the tips to restore Lenovo laptop to its default factory settings: 1  Using System Restore tool.