Copyright Goodheart-Willcox Co., Inc. 166 Unit 1 Computing Fundamentals Windows File Explorer. Many system fi les have the Hidden check box checked. Clicking the Advanced button opens a dialog box in which other settings regarding the save process for a fi le can be made. Security Tab The Security tab of the Properties dialog box permits the author to modify the permissions for sharing a fi le with other users on a network. Windows lets users form a workgroup when PCs are connected to a network. In addition, multiple users on a Windows PC may share fi les with one another. Some users only require need-to-know access to a fi le’s contents. Permissions allow restricted access to a fi le. Permissions are an extension of the Read-only attribute available on the General tab. For example, people may be working on developing a certain project as a group. Instead of carrying the common fi les around on a fl ash drive, Windows allows users in a group to see each other’s fi les on their own computers. This means they can allow other users to modify the fi le or simply read it. One user may create a fi le and give permission to other users to view the fi le content, but not change it. For example, it may be a fi nal version that has been adopted in some manner and no one should be able to change it unless authorized. These permissions are settings in the fi le properties. Permissions are important to an organization for several reasons. The information of a company must be secured. Workers who need to read a document may not be authorized to make changes to it. In addition, organizations can monitor who has attempted to access files for which they have no permission via log files. This monitoring can identify a potential security threat to the information. Permissions protect a document from unauthorized modifications or scrutiny. Details Tab The Details tab of the Properties dialog box provides extra data about the creation of the fi le and information related to authorship. On this tab, the fi le can be assigned a title and subject, rated, tags added, and comments added. It is here that the author’s name may be entered. The tab also summarizes all of the selections on the fi rst two tabs. This tab is context-sensitive and differs by fi le format. Previous Versions Tab The Previous Versions tab of the Properties dialog box lists when the fi le was backed up and supports restoring an earlier version of the fi le. This is very helpful if changes have been made and the fi le saved, thereby overwriting the earlier version. If the user decides not to make those changes, an earlier version of the fi le can be retrieved from the backup fi les. This function applies only to fi les that have been backed up with Windows Backup and Restore, which is discussed later. The information on this tab also helps when a program crashes, or unexpectedly stops working. When Windows crashes, it is expected to try Computing Fundamentals 3.6.2, 3.10 Computing Fundamentals 1.3.6 Engineering Engineering applies scientific theory to the design of materials for technological use. There are many branches of engineering, but the main branches are chemical engineering, civil engineering, electrical engineering, and mechanical engineering. Each branch has subdisciplines, which each have specialties. For example, a subdiscipline of electrical engineering is software engineering. This area specializes in creating software, from designing the functionality to writing the code. STEM STEM GS5 GS4