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• As the target library for any LANSA file definition being imported in a machine. The facility that allows LANSA file definitions to be included into an export list is described in Add Files to the List.
• As the target library for any non-LANSA object being imported into a machine. The facility that allows non-LANSA objects to be included into an export list is described in Add Non-LANSA Objects to the List.
• Anywhere in an IBM i or CPF command that is to be executed before or after an import run. The facility that allows commands to be defined for execution before or after an import run is described in a later section of this chapter.

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• The Variable Name must be in the form $$XXXXXX$$ where XXXXXX is any combination of numbers and letters (must be uppercase). Preferably the xxxxxx portion should be meaningful in some way.
• The Substitution Value / Default Value only demands mandatory entry if the variable is not to be prompted on import (see 'Prompt When Input' explanation below). If there is to be no prompt on import, the importing user will not be asked to supply a value for the variable and the value specified here will be used.
• When used with a prompted variable, the value entered here is the default value used if the importer either does not reply to the message , or else indicates that the default value should be used.
• The Prompt When Input value indicates whether or not the importing user should be prompted to supply a value for the variable.
• Enter 'Y' to indicate that the importer should be prompted. In this case, prompt text will be required.
• Leave blank or enter 'N' to indicate that the importer should not be prompted. In this case, a substitution / default value for the variable will be required.
• The Prompt Text specifies what message should be sent to the importer as a prompt for the variable when running an import job. Prompt text must be specified when a variable is prompted. The message should be as meaningful as possible in the space provided and normally ends with a question mark (?).
• A special feature allows the substitution / default variable to be specified as a LANSA system variable name. This means that more flexibility can be introduced into the preparation of export lists for import with no operator intervention.

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Any shipped LANSA system variable that is evaluated by program M@SYSVAR, or any user-defined system variable at all, can be used in this manner.

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