The right panel shows the Search Result tab and opens up more tabs depending on the features being used. Navigation buttons are used for navigating between the open tabs.
There are easy to understand messages about the functionalities that various icons perform in the form of tool tip messages. These messages will be shown while doing a mouse over on the icons.
Tool tip message while doing mouse over on mail icon when SDS is not selectedTool tip message when an SDS is selected and doing mouse over on mail icon
Tool tip message while doing mover on Chem Index Icon