## 1.52.76 viewer

    set viewer ( auto | <command> )

The `set viewer` command is used to select which external PostScript viewing application is used to display Pyxplot output on screen in the `X11` terminals. If the option `auto` is selected, then either ghostview or `ggv` is used, if installed. Alternatively, any other application such as `evince` or `okular` can be selected by name, providing it is installed in within your shell’s search path or an absolute path is provided, as in the examples:

    set viewer evince
    set viewer /usr/bin/okular

Additional commandline switches may also be provided after the name of the application to be used, as in the example

    set viewer gv --grayscale