Identifies the type of element that is the target of the cross-reference (for example,
figure
,
author-note
,
bibliographic
reference
). The values may be used for type-specific processing or validation.
| Value | Meaning |
|---|---|
| aff | Affiliation |
| app | Appendix |
| author-notes | Author notes |
| bibr | Bibliographic reference (typically to a <ref> element, but it may point to a <element-citation> or <mixed-citation> if there are multiple citations inside the <ref> element). |
| boxed-text | Textbox or sidebar |
| chem | Chemical structure (to a <chem-struct> or <chem-struct-wrap> element) |
| contrib | Contributor |
| corresp | Corresponding author |
| disp-formula | Display formula |
| fig | Figure or group of figures (to a <fig> or <fig-group> element) |
| fn | Footnote |
| kwd | Keyword |
| list | List or list item (to a <list> or <list-item> element; also, possibly to a <def-list> or <def-item> element) |
| other | None of the items listed |
| plate | Plate |
| scheme | Scheme |
| sec | Section |
| statement | Statement |
| supplementary-material | Supplementary information |
| table | Table or group of tables (to a <table-wrap> or <table-wrap-group> element) |
| table-fn | Table footnote |