The Label Field
The Label field can be used for many purposes, such as special in-text citations or reprint numbers.
When converting references from other reference management systems, the record number from the previous system is imported into the Label field, for example, when converting a Reference Manager database to EndNote.
Some citation styles require that citations include only part of the author’s name, such as [SMIT 90]. EndNote cannot create this citation for you, but if you type " SMIT 90" into the Label field and use the Label field in your style’s citation template, EndNote will insert the Label field into the citation.
This field is one of three than can be used in EndNote temporary citations in place of the EndNote record number. The other two fields are Accession Number and Pages. You can find more information on this in Temporary Citations Preferences.
If you do not need the Label field for citation purposes, it can be used as an additional field for categorizing references or storing reprint numbers. (Do not use EndNote’s record numbers to number reprints because these numbers change when references are moved to different libraries. EndNote’s record numbers cannot be assigned or changed by the user, but the Label field can be edited.)