Language:
Lets you select a different language translation package. You can download many translation packages from http://columba.sf.net/download_translations.php. Just download the package of choice and save it to Columba's program folder or your configuration folder. Columba will automatically recognize the new package on restart.
Toolbar Style:
This option lets you change the style of all the toolbars in Columba. You can enable icons, show icons with text and choose the location of the text. Turning off the display of toolbar icons will maximize the space available for displaying messages.
Look and Feel:
You can change the way Columba looks and feels with Themes (often also known as skins). New themes can be downloaded from our website at http://columba.sf.net/download_plugins.php. Just download the plugin and use the Plugin Manager to install the new Look and Feel.
Overwrite Look and Feel font settings:
Look and Feels also choose individual fonts. This option allows you to change the font settings of Columba, independent from the used theme.
Main font:
This is the font of all the controls like menus and buttons.
Text font:
Font used by the message viewer and the composer. Usually this should be a fixed width font to allow easier editing of contents.