Viewers

Allows you to associate file extensions with viewer plugins or external viewers.

File masks priority list: Lists all extensions associated with viewers. Multiple extensions separated by semicolons (;) can be associated with one viewer.
Associated viewer: Specifies the viewer associated with the selected extensions. It can be an external viewer, Internal Viewer (text/hex), or a plugin.
Command: Specifies the path to the external program used to display file content.
Arguments: Specifies parameters passed to the external viewer.
Initial directory: Specifies the initial directory for the external viewer.