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.
On the Lenovo G500S you will have to push the little button next to the power button while the laptop is turned off or asleep, to enter the BIOS and boot menu.You can change the boot sequence by entering the BIOS and in there make the dvd-player the first boot device.share | improve this answer.n the Lenovo G500S you will have to push the little button next to the power button while the laptop is turned off or asleep, to enter the BIOS and boot menu.