Textual material that names the parties who the author wishes to thank or recognize for their assistance in, for example, producing the work, funding the work, inspiring the work, or assisting in the research on which the work is based.
While many non-JATS tag sets limit the <ack> to inside Back Matter, the Archiving and Interchange Tag Set allows <ack> at either the paragraph or the section level at many places within the body. Usage within the body of an article will probably be rare.
<!ELEMENT ack %ack-model; >
(sec-meta?, label?, title?, (address | alternatives | array | boxed-text | chem-struct-wrap | code | fig | fig-group | graphic | media | preformat | supplementary-material | table-wrap | table-wrap-group | disp-formula | disp-formula-group | def-list | list | tex-math | mml:math | p | related-article | related-object | ack | disp-quote | speech | statement | verse-group | x)*, (sec)*, (notes | fn-group | glossary | ref-list)*)
The following, in order:
<abstract>, <ack>, <app>, <app-group>, <back>, <bio>, <body>, <boxed-text>, <disp-quote>, <front>, <glossary>, <license-p>, <named-content>, <notes>, <p>, <ref-list>, <sec>, <styled-content>, <trans-abstract>
...
<back>
<ack>
<p>We thank B. Beltchev for purification of Hfq, S. Cusack and A. J.
Carpousis for the gift of PAP I, A. Ishihama for Hfq antibodies used in Hfq
purification, M. E. Winkler for strains TX2808 and TX2758, I. Boni for reminding
us that Hfq binds poly(A), M. Springer for suggesting that Hfq might
relate PAPs to primitive telomerase, Ph. Derreumeaux for help in sequence
comparisons, M. Grunberg-Manago, C. Condon and R. Buckingham for reading the
manuscript, and H. Weber for advice. We also acknowledge Ministère de
l'Education Nationale de la Recherche et de la Technologie, Centre National de
la Recherche Scientifique, and Paris7 University for
support.</p>
</ack>
<glossary>...</glossary>
<ref-list>...</ref-list>
</back>
...
JATS-common1.ent