This package provides a class for typesetting publications of Association for Computing Machinery. Your TeX distribution probably includes the latest released version of this package. If you decide to install it yourself, please see Installation section of the User's Guide. Changes version 1.08 SIGPLAN reformatting (Matthew Fluet); bug fixes version 1.09 SIGPLAN: revert caption rules (Matthew Fluet) version 1.10 Bug fixes version 1.11 Customization of ACM theorem styles and proof environment (Matthew Fluet). version 1.12 Bug fixes and documentation updates. Footnotes rearranged. Option natbib is now mostly superfluous: the class makes a guess based on the format chosen. version 1.13 Formatting changes: headers, folios etc. Bibliography changes. version 1.14 Warn about undefined citation styles; move definitions of acmauthoryear and acmnumeric citation styles before use. version 1.15 New structured affiliation command. New commands for acknowledgements. version 1.16 Formatting changes for headers and footers. version 1.17 Formatting changes for margins and lists. Bug fixes. version 1.18 Natbib is now the default for all versions. A unified bib file is used for all styles. Better treatment of multiple affiliations. version 1.19 Include 'Abstract', 'Acknowledgements', and 'References' in PDF bookmarks. version 1.20 Bug fixes, documentation updates version 1.21 Bibliography changes: added arXiv, some cleanup version 1.22 Bibliography changes for Aptara backend; should be invisible for the users. version 1.23 Added PACM PL journal option. version 1.24 Added IMWUT journal option. version 1.25 Updated PACMPL journal option. version 1.26 Bug fixes version 1.27 Bug fixes version 1.28 Bug fixes: natbib=false now behaves correctly. version 1.29 Documentation changes. Head height increased from 12pt to 13pt. Removed spurious indent at start of abstract. Improved kerning in CCS description list. version 1.30 Bibtex style now recognizes https:// in doi. Added \frenchspacing. \department now has an optional hierarchy level. Switched to T1 encoding Updated IMWUT and PACMPL version 1.31 Changed default year and month to the current ones (thanks to Matteo Riondato) Table of contents now works Marginalia now work in all formats New command \additionalaffiliation Documentation changes version 1.32 New DOI formatting. Format siggraph is now obsolete, and sigconf is used instead. New proceedings title: POMACS. version 1.33 New option `timestamp' (Michael D. Adams) New option `authordraft' Documentation updates Bug fixes We now use Type 1 versions of Libertine fonts even with XeTeX. New hook acmart-preload-hook.tex (wizards only!) Added new options `obeypunctuation' for \affiliation command Added SubmissionID Added right line count ruler for two-column formats Added workaround for Adobe Acrobat bugs in selection Added eid field to the bibliography version 1.34 Deleted DOI from doi numbers Changed bibstrip formatting The command \terms is now obsolete The rulers in review mode now have continuous numbering version 1.35 Author-year bib style now uses square brackets. Changed defaults for TOG sample Price is suppressed for usgov and rightsretained modes. Bugs fixed