Figure 1-3 A topic abstract displayed for a search result in Help Viewer For information on how to provide abstracts for help topics, see Adding Abstracts. Figure 1-3 shows the abstract for a help topic returned as a search result for the query entered in Figure 1-2. The user can view the selected topic by clicking the topic in the search results table. When the user moves their cursor over a topic from the search results, an abstract of the help topic appears, if available. Help Viewer displays the title of each relevant help topic in a table of search results, along with the help book in which that topic is found (if the user selected Search All Help). Help Viewer returns up to 15 help topics, sorted in order of relevance as determined by SearchKit) When the user presses Return, Help Viewer searches the help books installed on the system (if the user selected Search All Help) or in the selected help book (if they selected that option) for the relevant term or terms. Figure 1-2 A query entered in the search field of Help Viewer Figure 1-2 shows a query entered in the text field of the Help Viewer window, with Search All Help selected. Users enter the term or concept for which they want to obtain help into the text field. ![]() The text entry field at the right side of the Help Viewer window’s toolbar allows users to search the available help content on the system. Especially for large help systems, searching is often the most efficient and effective way for users to obtain help. ![]() Users often arrive at online help with an idea of what they want to accomplish help should allow them to get the information they need as quickly as possible and get on with their tasks. One of the primary advantages of Help Viewer for viewing online help is its ability to quickly and accurately search an installed set of help content. The search field allows users to search all help in the current book or all help on the system-they click the magnifying glass at the left of the search field to choose which. The Action menu provides items such as Make Text Larger (or smaller), Find (which finds text strings on the current page), and Print. Clicking the Home button opens the title page of the currently open help book if the user presses this button, a menu of all the available help books appears. The Back and Forward buttons on the left side of the toolbar allow users to view their navigation history and navigate through previously visited help pages. There are four user interface elements in the toolbar at the top of the Help Viewer window: the Back and Forward buttons, the Home button, the Action menu button, and the search field. In Figure 1-1, the Help Viewer window displays the system help book, Mac Help. When Help Viewer launches, it brings up a window displaying help for the application from which the user requested assistance. Users typically launch Help Viewer by choosing the application help item from the Help menu, or by typing a query in the Spotlight For Help text field in the Help menu (see How Users Access Your Help ). Help Viewer displays files adhering to the HTML 4.01 specification. Users view online help in Help Viewer, a browser-like application designed to display HTML help content. All Carbon, Cocoa, and Java developers authoring user help for a Mac app should be familiar with the concepts presented here. It describes the Help Viewer interface, how Help Viewer displays your help book, and how users access help from your application. ![]() This chapter introduces the Help Viewer application and the Apple Help application programming interface.
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