# Programs and Paths

You can set the location of folders used by Opera, and configure external software that Opera uses.

## Paths

Option | Explanation
--- | ---
Opera directory | Do not change this unless you know what you are doing
Window storage file | Your default set of saved windows
Download directory | Opera saves files you download from the Internet to this directory

## Programs

Programs often write information to <stdout>. To read this information run the program call through a terminal.

Option | Explanation
--- | ---
Source viewer | Software used to view source (markup) of Web pages
Telnet program | Communicate with other computers through a command-line interface
TN3270 software | For communication with IBM mainframes. See IETF RFC 1576 for specifications.
News client | Select your news application and set command-line parameters

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