Click on a symbol link -- for instance, SPY -- to navigate the web browser to the Overview page for that symbol.
Click on a FactSheet link -- for instance, -- to pop up a quick summary of the equity without leaving the current active page. Summary includes a brief overview, one paragraph description, charts, price history, option summary, option chain, news, dividends and earnings history.
The icon next to a symbol indicates that the symbol is already included in one of your custom watchlists. Note that you are still able to add this symbol to a different watchlist by clicking on this icon.