Restricted Open-shell Hartree
Restricted may refer to: *R rating (other), list of subjects where "R" stands for "Restricted" * 18 rating, media rating designation sometimes called "Restricted" *Restricted (country club), historical use of the term in country clubs in the United States *Restricted airspace, airspace for which air traffic is restricted or prohibited for safety or security concerns * Restricted area, several uses *Restricted free agent, a type of free agent in various professional sports * Restricted list, a roster status in Major League Baseball *Restricted stock, stock of a company that is not fully transferable See also * *Restrict, keyword in the C programming language *Restriction (other) Restriction, restrict or restrictor may refer to: Science and technology * restrict, a keyword in the C programming language used in pointer declarations * Restriction enzyme, a type of enzyme that cleaves genetic material Mathematics and logi ...

R Rating (other)
R rating may refer to: * R rating, a rating of the Canadian Home Video Rating System * R rating, a rating of the Korea Media Rating Board * R rating (Motion Picture Association), a rating of the Motion Picture Association film rating system * Restricted ratings of the Movie and Television Review and Classification Board in the Philippines * Restricted ratings of the Office of Film and Literature Classification in New Zealand * R18 (British Board of Film Classification), a rating by the British Board of Film Classification usually signifying hardcore pornography * R18+, a rating of the Australian Classification Board * R18 rating, a rating of Eirin in Japan See also *18 rating * M for Mature * Mature content *R. Rated * R-value (other) *R18 (other) R18, or R-18, may refer to: Media content ratings * R18 (British Board of Film Classification) * R18+ issued by the Australian Classification Board * R18 issued by the New Zealand Classification Office * R18+ ...
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18 Rating
18 rating refers to a type of age-based content rating that applies to media entertainment, such as films, television shows and computer games. The following articles document the rating across a range of countries and mediums: Ratings * 18 (British Board of Film Classification), a prohibitive rating used to regulate age based admission to films in the United Kingdom * R18 (British Board of Film Classification), a more restrictive version of the rating used for hardcore pornography in the United Kingdom * X rating, a common variant of the UK's 18 and R18 ratings used across many countries Classification organizations * Australian Classification Board (R18+ and X18+) * Brazilian advisory rating system (18) * British Board of Film Classification (18 and R18) * Canadian motion picture rating system **Canadian Home Video Rating System (18A, R and A – 18 equivalents) ** Manitoba Film Classification Board (18A, R and A) **Maritime Film Classification Board (18A, R and A) **Britis ...
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Restricted (country Club)
A country club is a privately owned club, often with a membership quota and admittance by invitation or sponsorship, that generally offers both a variety of recreational sports and facilities for dining and entertaining. Typical athletic offerings are golf, tennis, and swimming. Where golf is the principal or sole sporting activity, and especially outside of the United States and Canada, it is common for a country club to be referred to simply as a golf club. Country clubs are most commonly located in city outskirts or suburbs, due to the requirement of having substantial grounds for outdoor activities, which distinguishes them from an urban athletic club. Country clubs originated in Scotland and first appeared in the US in the early 1880s.Simon, Roger D. “Country Clubs.” In The Encyclopedia of American Urban History, edited by David R. Goldfield, 193-94. Thousand Oaks, CA: SAGE Publications, Inc., 2007. doi: 10.4135/9781412952620.n110. Country clubs had a profound ...
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Restricted Airspace
Restricted airspace is an area of airspace typically used by the military in which the local controlling authorities have determined that air traffic must be restricted or prohibited for safety or security concerns. It is one of many types of special use airspace designations and is depicted on aeronautical charts with the letter "R" followed by a serial number. According to the United States Federal Aviation Administration (FAA): "Restricted areas denote the existence of unusual, often invisible, hazards to aircraft such as artillery firing, aerial gunnery, or guided missiles. Penetration of restricted areas without authorization from the using or controlling agency may be extremely hazardous to the aircraft and its occupants." Restricted airspace zones may not be active ("hot") at all times; in such cases there are typically schedules of local dates and times available to aviators specifying when the zone is active, and at other times, the airspace is subject to normal VFR/I ...
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Restricted Area (other)
Restricted area may refer to: * An area that only authorized people can enter; see also exclusion zone * Restricted area, a zone within the key of a basketball court * A departure area after the customs Customs is an authority or agency in a country responsible for collecting tariffs and for controlling the flow of goods, including animals, transports, personal effects, and hazardous items, into and out of a country. Traditionally, customs ...

Restricted Free Agent
A restricted free agent (RFA) is a type of free agent in the National Football League (NFL), National Hockey League (NHL), or National Basketball Association (NBA). Such players have special restrictions on the terms under which they can retain or change employment status with their athletic club teams. NFL In the National Football League, a restricted free agent is one with three or fewer accrued seasons (six or more regular season games with a team) of service, who has received a "qualifying" offer (a salary level predetermined by the NFL Collective Bargaining Agreement between the league and its players, known as a "tender") from his current club. He can negotiate with any club through a certain date. If the restricted free agent accepts an offer sheet from a new club, his old club has "right of first refusal," a five-day