3270 Terminal Setup

National character set: The values identify the various host character sets that Host Integrator supports. The Design Tool uses this setting to choose a conversion table that it uses to convert host characters (EBCDIC) into PC characters (ANSI). This setting should match the national character set used by your host system. If it doesn't match, then some characters, such as accents, may not display correctly. See your host documentation for definitions of the characters in each set. The default value is US English.
You can also define a custom code page. After creating the custom code page file, select Custom in the national character set list. A set of examples is included with Host Integrator; see Creating a Custom Code Page for details.
Country Extended Graphics Code: When this check box is selected, additional characters are available in the configured National character set. See your host documentation for details. By default this box is selected.

You can change the settings in the Terminal Setup dialog box if you have opened a model but you are not connected to it.

If you have no model open, this dialog box is unavailable.
If you are connected to a model, the settings in this dialog box can be viewed but cannot be changed.