A “submission” refers to the abstract of a paper or to the summary of a speaker’s topic or position if the speaker is not presenting a formal paper but instead is participating in a panel, debate, etc.
Open: This means that anyone can submit an abstract or speaker summary to the session.
Open by Invitation Only: This means that only individuals specifically identified and invited by you, the session chair, are allowed to submit an abstract or speaker summary to the session. Your invited speakers are required to submit abstracts or speaker summaries by the abstract submission deadline and are subject to the one-per-person rule; i.e., they may not be committed to more than one session. Persons who appear in your session plan (to be prepared at a later date) who did not submit abstracts and/or who are not registered will not be included in the final program. Only abstracts submitted online, by the submission deadline, will be accepted.
Closed: This means that no one can submit to the session. Some sessions are not conducive to presentations or formal speakers; therefore, abstracts are not appropriate and only the session chair is listed on the program. Examples: A workshop with only the chair as a facilitator, or a gaming session.