Number of buttons on the toolbar We are designing Communicator to accommodate users with systems that meet the minimum requirements, which includes users running Communicator on 640x480 resolution. Under these requirements, a maximum of 9 to 10 buttons are allowed in all toolbars in Communicator in order for the toolbars to be useful. The logo should be in a consistent place in all windows. Currently it is on the far left of the topmost toolbar. If the toolbar height changes due to a change in toolbar preference, the size of the animation should change accordingly.
All buttons are of the same width so as to give each button a constant target size.
Text labels for toolbar buttons Toolbar buttons need to be reasonably large so the text is readable, yet not so large that the desired 9-10 buttons cannot fit. We limit the number of characters for text labels so that they do not exceed 9 characters. In the browser, we feel strongly that Back, Forward, and Stop should stay in the same position they've occupied in previous versions to support users' positional memory. Data from field studies indicate that these buttons are the most frequently used buttons in the browser.