Attribution Tips for @id

To compose an @id, one must combine the prefix of the type of element with a whole number as shown below:

XML Element	Description	Prefix	Example
aff	Affiliation	aff	aff1, aff2, …
app	Appendix	app	app1, app2, …
author-notes/fn | fn-group/fn	Authors notes Article footnotes	fn	fn1, fn2, …
boxed-text	Text box	bx	bx1, bx2, …
corresp	Correspondence	c	c1, c2, …
def-list	List of definitions	d	d1, d2, …
disp-formula	Equation | formula	e	e1, e2, …
fig	Figure	f	f1, f2, …
glossary	Glossary	gl	gl1, gl2, …
inline-graphic	Inline graphic	i	i1, i2, …
inline-supplementary- material	Inline supplementary material	suppl	suppl1, suppl3, …
media	Media	m	m1, m2, …
ref	Biblioraphic reference	B	B1, B2, …
sec	Section	sec	sec1, sec2, …
sub-article	Sub-article	S	S1, S2, …
supplementary-material	Supplementary Material	suppl	suppl1, suppl2, …
table-wrap-foot/fn	Table footnotes	TFN	TFN1, TFN2, …
table-wrap	Table	t	t1, t2, …