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.
You can restore Lenovo laptop to its default factory settings using Rescue and Recovery tool by clicking the 'Lenovo Care' button in your laptop. Then, click 'Restore your system' and there you need to select 'Restore my hard drive to the original factory state' and need to follow few instructions.hile 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.