The Language tab allows you to change your Language defaults but these should only need to be changed if English is not the language in which you wish to work. These are the defaults that are used when creating a new PPD but may be overridden in the Output Page Setup for a design.

Default Codepage

This entry should match your IBM i code page (System Value QCHRID). Note: If there is more than one code page for a country then, in general, go for the biggest number codepage that matches the country. It's probably the newest with the most characters.

Default Display Font Character Set

This entry determines the display of the text within the Cobwebb Designer.

Default Server Font Codepage Name

This entry is used to find the correct font groups on the IBM i.

See QFNTCPL Codepages for a list of codepages supported by QFNTCPL.