might release cut content from official products that they worked on as doujinshi. Larger conventions also often allow some involvement of media companies. Many kinds of companies support doujinshi conventions through sponsorship, direct participation, or providing various necessary services. Comiket, for instance, has a "corporate area" where mostly media companies sell or give away goods and merchandise. Though doujinshi conventions, especially larger ones, typically allow other content such as doujin soft, cosplay, and corporate booths selling merchandise, smaller events typically only feature doujinshi. Other forms of doujin works such as doujin soft tend to have their own events, where they are featured exclusively. Different kinds of conventions In Japan, there are doujinshi conventions in many different sizes, on different schedules, and with a different focus. Many are recurring events, held yearly, twice yearly, quarterly, or even monthly. Many large conventions are "all genres" (, ooru janru), meaning that they are multi-fandom events that welcome any kind of content, from any series (referred to as "genres" in the Japanese vernacular) as well as original content. Comiket and Niigata Comic Market are examples. In contrast to All Genre events is "Only Genre" (, onrii janru) events. Due to the smaller focus, these events are typically smaller, and are also more likely to be one-off events. These are also known as "only events" (, onrii ibento) or "only doujinshi sale events" (, onrii dōjinshi sokubaikai). Only events feature only doujinshi about one particular fandom, one particular character, or one particular pairing or fan trope. A themed "only event" is sometimes held within or alongside a larger convention, with the organizers of the "only event" reserving space and signage for their smaller event in a hall shared with other "only events" and a larger umbrella event, or having the "only events" taking place in smaller halls in or around the same venue. These mini-events are also called "petit only" (, puchi onrii). They can focus on the same themes as the "only events" that occur outside of a larger convention. Though the bigger events that they are attached to are typically doujin events, this is not always the case, such as with the Vocaloid only event "THE VOC@LOiD Cho M@STER 39" being held within video streaming website Niconico's annual Niconico Chokaigi event, which is held to celebrate and promote the website and its community, or Touhou Project only event Touhou Gensenkyou being held alongside