When do the Preference settings take effect ?

When the Preference settings take effect depends on the widget type by which you set a value of the item in the Preferences dialog.

Buttons

When you click the check buttons or radio buttons, the settings will take effect except for the Language setting (see below).

Entries

When you press the Return key or click the Save button after typing a value in the entry, the settings will take effect. Be sure that it is necessary to press the Return key or click the Save button.

Language

You must restart tkDerm after changing the Language setting to see the effect. This is because the language with which tkDerm shows button names, menu items, window titles or messages is chosen when it starts up.

The settings you have made effective by these ways will be lost if you don't save them before quitting tkDerm. Be sure to save the settings by the Save button if you want to make the settings effective in the subsequent sessions.