Active themes are indicated by indicated by a raised entry in the View's theme list. ArcView makes heavy use of buttons and tools, so you should try to get familiar with them. Most buttons replicate frequently-used menu choices. Many tools access capabilities that don't appear in ArcView's menus at all. For example, ArcView's drawing tools, feature edit and Layout composition tools aren't replicated in the menu.
Tools are more interactive than buttons.
For example, you can zoom in via either button or tool , but they work differently. Clicking the Zoom button simply zooms the view by a predefined amount. Clicking the Zoom tool doesn't re-draw the view until you drag a zoom box in the view or click a new center of view, and the tool remains active until you select another tool or activate another type of window. Note that you can set the scale of the View by simply entering a scale value into the Scale field to the right of the View tool bar. Or a Table may be a separate dBase file that can be joined to a destination theme table via corresponding values in specified fields in the two tables.