**Important Dates**

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April 4
PLoPourri proposals open, no due dates
June 28-July 3
Paper submissions due
July 5
Shepherding begins
July 5
Registration opens
August 23
Last draft due for review
August 30
Notification of acceptance
August 23
Deadline focus groups/
workshop proposals
September 10
Conference versions due
September 24 - October 1
Writers' Workshops
October 5-7
PLoP Conference days
December 7
Proceedings version due


We are happy to announce that our PLoP 2021 is shaping up to be, once again, a great experience.

2021 has been another year impacted by COVID-19 restrictions, therefore, we have made the decision to go virtual again with the PLoP 2021 Conference.

In addition to the conference, we are organizing also this year a PLoPourri, a combination of events and activities to happen up to the conference days, covering different phases of the lifecyle of patterns and pattern languages, aimed to be held face-to-face, virtually, or in a hybrid way, depending on the event, time and location constraints.

The International Conference on Pattern Languages of Programs

Pattern Languages of Programs (PLoP) conference is a premier event for pattern authors and pattern enthusiasts to virtually gather, discuss and learn more about patterns and software development.

The conference program offers pattern authors an unique opportunity to have their pattern languages reviewed by fellow authors, which occurs mainly in the form of Writers' Workshops.

Authors and non-authors will find in the different PLoP activities (Writers' Workshops, Focus Groups, BoF sessions, Games) many opportunities to learn more about patterns and pattern writing.

As a whole, the conference provides a friendly and effective environment to give and get feedback, to share expertise, and to allow the participants to improve their patterns and make them more useful and more publishable.

Call For Submissions

PLoP promotes development of pattern languages on all aspects of software, including design and programming, software architecture, user interface design, domain modeling, software processes, project management, and more. As well as software patterns, we encourage patterns about collaboration, education, and creativity in broader sense toward better quality of work and life.

Paper submissions may include short papers containing one or more patterns, longer pattern languages or sequences, or works-in-progress by writers wishing to get in-depth shepherding by an experienced author at the conference. Patterns and pattern languages on other topics, essays on patterns, and visions for the future are encouraged.

In addition, you may submit proposals for online discussion groups or workshops bringing together people interested in a hot topic related to online learning about patterns or proven practices. Non-conventional formats and virtual online experiences that stretch our brains are encouraged and welcomed.

Suggestions or proposals for activities are welcome and encouraged. Please contact the chairs with your ideas.

PLoP21 submissions are peer reviewed and digitally archived at ACM. Papers discussed at writer's workshop at this conference qualify for submission to the journal "TPLoP - Transactions on Pattern Languages of Programming" published by Springer. See Springer's pages on TPLoP for details of this journal.

More information

For more information, please contact the organizers: Ademar Aguiar and Joseph Yoder.

At the Hillside Group web site you can learn more about patterns, writing patterns, PLoP conferences, and previous PLoP's.

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