The iee-spec placeholder represents the number of an import/export storage element in a tape library.
[iee]n | none | vacant
where n is a number ranging from 1 to the maximum number of import/export elements in the library.
Elements are referenced by their abbreviation (iee) followed by the number of the element, for example, iee2. When there is more than one element of a particular type, element numbering starts at 1. When there is only one element of a type, the number can be omitted: iee1 and iee both refer to the first and only import/export element.
Indicates no import/export element.
Indicates any empty import/export element.