The toolbar contains several very useful buttons and some that don't yet do anything - they just sit there looking stupid or do something one of the other buttons does. The useful buttons include: Hide/Show, Back, Forward, Stop, Refresh, Home, Locate, Options, Print, 2 jump buttons, Font, Next and Previous. Most of the buttons do what would be expected from their text/icons. The 2 jump buttons use predefined icons (a page with a world on it & the curvy Windows logo overlaid on a globe) and allow the help author to customise their jump location and text. The Previous and Next buttons jump to the previous and next topics according to the Contents tab.