INTERNET-DRAFT PICS <draft-pics-services-00.txt> MIT/W3C Expires May 21, 1996 November 21, 1995 Rating Services and Rating Systems (and Their Machine Readable Descriptions) Status of this Memo This document is an Internet-Draft. Internet-Drafts are working documents of the Internet Engineering Task Force (IETF), its areas, and its working groups. Note that other groups may also distribute working documents as Internet-Drafts. Internet-Drafts are draft documents valid for a maximum of six months and may be updated, replaced, or obsoleted by other documents at any time. It is inappropriate to use Internet-Drafts as reference material or to cite them other than as "work in progress." To learn the current status of any Internet-Draft, please check the "1id-abstracts.txt" listing contained in the Internet-Drafts Shadow Directories on ftp.is.co.za (Africa), nic.nordu.net (Europe), munnari.oz.au (Pacific Rim), ds.internic.net (US East Coast), or ftp.isi.edu (US West Coast). Distribution of this document is unlimited. Comments on this draft should be sent to "pics-spec-comments@w3.org". 1. Introduction This document, which has been prepared for the technical subcommittee of PICS (Platform for Internet Content Selection), defines a language for describing rating services. Software programs will read service descriptions written in this language, in order to interpret content labels and assist end-users in configuring selection software. A related document, "Label Syntax and Communication Protocols", <draft-pics-labels-00.txt>, specifies the syntax and semantics of content labels and protocol(s) for distributing labels. The goal of the PICS effort is to enable a marketplace in which many different products and services will be developed, tested, and compared. Hence, the following considerations have had significant impact on this document: o Some organizations may rate items on well-known dimensions, using their own techniques and viewpoints to determine actual ratings. Other organizations may choose to develop their own dimensions for rating. This motivates the distinction between a _rating system_ and a _rating service_ (see the glossary). o Some services may provide access to their ratings on-line, from an HTTP server, while others may either ship them in batches or transmit them on floppy disks or CD-ROMs. 2. What is a "Rating Service"? A _rating service_ is an individual, group, organization, or company that provides content labels for information on the Internet. The labels it provides are based on a rating _system_ (see below). Each rating service must describe itself using a newly created MIME type, "application/pics-service". Selection software that relies on ratings from a PICS rating service can first load the "application/pics-service" description. This description allows the software to tailor its user interface to reflect the details of a particular rating service, rather than providing a "one design fits all rating services" interface. This specification does not state how the "application/pics-service" description of a rating service is initially located. For users of the World Wide Web, we expect that well-known sites will provide lists of rating services along with their "application/pics-service" descriptions. It is expected that client programs will cache copies of "application/pics-service" descriptions, so any incompatible change in a service description should be accomplished by creating an entirely new service. Each rating service picks a URL as its unique identifier. It is included in content labels the service produces, to identify their source. To ensure that no other service uses the same identifier, it must be a valid URL. The document available at that URL may be in any format, but we recommend that it: o be an HTML document organized for ease of use by novice computer users (the "application/pics-service" description would be a poor choice); o describe the rating system used, or provide a link to another document describing it; o be available in multiple languages, either through existing negotiation mechanism or through links to alternate language versions. 3. What is a "Rating System"? A rating _system_ specifies the dimensions used for labeling, the scale of allowable values on each dimension, and a description of the criteria used in assigning values. For example, the MPAA rates movies in the USA based on a single dimension with allowable values G, PG, PG-13, etc. Each rating system is identified by a valid URL. This enables several services to use the same rating system and refer to it by its identifier. The URL naming a rating system can be accessed to obtain a human-readable description of the rating system. The format of that description is not specified. 4. What is a "Content Label"? A _content label_ (or _rating_) contains information about a document. As described in [1], "Label Syntax and Communication Protocols", a content label (or rating) has three parts: 1. the URL naming the rating service that produced the label; 2. a set of PICS-defined (and extensible) attribute-value pairs, which provide information about the rating such as the date that the rating was assigned; 3. a set of rating-system-defined attribute-value pairs, which actually rate the item along various _dimensions_ (also called _categories_). 5. The "application/pics-service" Document Type A rating service is defined by a document of type "application/pics-service". The detailed syntax and semantics are presented in the next two sections. Here is an example of such a document, intended only to illustrate the full set of features of a machine description: ((PICS-version 1.0) (rating-system "http://www.gcf.org/ratings") (rating-service "http://www.gcf.org/v1.0/") (icon "icons/gcf.gif") (name "The Good Clean Fun Rating System") (description "Everything you ever wanted to know about soap, cleaners, and related products. For demonstration purposes only.") (category (transmit-as "suds") (name "Soapsuds Index") (min 0.0) (max 1.0)) (category (transmit-as "density") (name "suds density") (label (name "none") (value 0) (icon "icons/none.gif")) (label (name "lots") (value 1) (icon "icons/lots.gif"))) (category (transmit-as "subject") (name "document subject") (multivalue true) (label (name "soap") (value 0)) (label (name "water") (value 1)) (label (name "soapdish") (value 2)) (label-only)) (category (transmit-as "color") (name "picture color") (integer) (category (transmit-as "hue") (label (name "blue") (value 0)) (label (name "red") (value 1)) (label (name "green") (value 2))) (category (transmit-as "intensity") (min 0) (max 255)))) 6. Explanation of Sample Rating Service 1. The identifier of the rating system used is "http://www.gcf.org/ratings". The document available at that URL should be a human-readable description of the categories, scales, and intended criteria for assigning ratings. 2. The identifier of the rating service is "http://www.gcf.org/v1.0/". The labels themselves will have this URL in them to identify the service that created them. The document available at this URL should be a human-readable description of the rating service. 3. There is an icon associated with the rating service, and it can be retrieved from "http://www.gcf.org/icons/gcf.gif" (formed by interpreting the _icon_ attribute's value relative to the _rating-service_ identifier). 4. There are four top-level categories in this rating system. Each category has a short transmission name to be used in labels; some also have longer names that are more easily understood. For example, the first has transmission name "suds" and the longer name "Soapsuds Index". The second has a transmission name of "density" and longer name "suds density". 5. The "Soapsuds Index" category is rated on a scale from 0.0 to 1.0, inclusive. 6. The "suds density" category can have ratings from negative to positive infinity, but there are two values that have names and icons associated with them. The name "none" is the same as 0, and the name "lots" is the same as 1. Icons associated with those names are found at "http://www.gcf.org/ratings/icons/none.gif" and "http://www.gcf.org/ratings/icons/lots.gif" (i.e. they are dereferenced relative to the _rating-system_ identifier). 7. The "document subject" category only allows the values 0, 1, and 2 to be used, but a single document can have any combination of these values. Each value has a name (0 is "soap," etc.). So one document might not have any rating on this category, while another is both a "soap" and a "soapdish". 8. The "picture color" category has two sub-categories. Values on the "picture color" dimension itself are restricted to integers, and will be transmitted as a category named "color." The first sub-category is transmitted as "color/hue" and the second as "color/intensity". Notice that color/hue can take on only integer values (because it inherits the _integer_ attribute of its parent, "color", category), but there are three values with names ("blue", "red", and "green"). The category color/intensity can take on any integer value between 0 and 255 (inclusive). 7. Detailed Syntax of "application/pics-service" Notes: 1. Whitespace is ignored except in quoted strings. 2. The strings in _transmit-as_ are case insensitive. All other strings are case sensitive. 3. This BNF grammar overly constrains the format. The optional attribute/value pairs in _ratingservicedescription_, _categorylist_ and _enum_ may occur in any order. 4. Additional attributes may be added over time. For experimental purposes, attributes with names beginning "x-" may be added at any time without prior arrangement. Extending the names that are formally part of this specification requires an additional consensus process before adoption. Clients are expected to ignore any attributes they do not understand. 5. This specification requires the use of UTF-7 encoding to allow for the inclusion of non-English description strings. Because internationalization is an area still under discussion in the standards community, this choice may well be subject to change in the near future. For those rating systems and services that use only the US-ASCII character set in their descriptive strings, UTF-7 allows direct encoding of the following (printable) characters: a-z, A-Z, 0-9, '(),-./:?!#$%&*;<=>@[]^_`{|} Notice that "+" is *not* included in this set, since it is used by the UTF-7 encoding system. 6. It is guaranteed that this and all future versions of the "application/pics-service" MIME type will begin with the _version_ information, changing from 1.0 as specified here to other numbers as the specification is revised. Rating services are encouraged to place a version number in the _rating-service_ URL, and to change to a new URL when an incompatible change must be made to their specification. ratingservicedescription :: '(' _version_ _ratingsystem_ _ratingservice_ [_icondef_] [_name_] [_description_] ['(' 'default' [_min_] [_max_] [_multi_] [_integer_] [_labeled_] ')'] _categorylist_ ')' version :: '(' 'PICS-version' '1.0' ')' ratingsystem :: '(' 'rating-system' _quotedURL_ ')' ratingservice :: '(' 'rating-service' _quotedURL_ ')' quotedURL :: ' " ' URL ' " ' URL is as defined in [4], "RFC 1738". In addition, PICS defines the following new form for referencing Internet Relay Chat (IRC) rooms: URL :: ... | 'irc://' _host_ '/' _alphanum_ (where _host_ is the usual Internet hostname) icondef :: '(' 'icon' _quotedURL_ ')' name :: '(' 'name' _quotedstring_ ')' description :: '(' 'description' _quotedstring_ ')' quotedstring :: ' " ' _UTF-7_ ' " ' UTF-7 :: Characters encoded using UTF-7, with direct coding of US-ASCII set O *except* for the double-quote (decimal 34) which must be encoded to allow for its use as the string delimiter character. See note above. categorylist :: [1*n] '(' 'category' '(' 'transmit-as' _transmitname_ ')' [_icondef_] [_name_] [_description_] [_min_] [_max_] [_multi_] [_integer_] [_labeled_] [_enumlist_] [_categorylist_] ')' transmitname :: ' " ' [1*n]_alphanumpm_ ' " ' alphanumpm :: 'A' | ... | 'Z' | 'a' | ... | 'z' | '+' | '-' min :: '(' 'min' _minnum_ ')' max :: '(' 'max' _maxnum_ ')' minnum :: _number_ | '-INF' maxnum :: _number_ | '+INF' number :: [_sign_]_unsignedint_['.' [_unsignedint_]] sign :: '+' | '-' unsignedint :: [1*n][0-9] multi :: '(' 'multivalue' [_boolean_] ')' boolean :: 't' | 'f' | 'true' | 'false' integer :: '(' 'integer' [_boolean_] ')' labeled :: '(' 'label-only' [_boolean_ ] ')' enumlist :: [1*n]_enum_ enum :: '(' 'label' _name_ [_description_] '(' 'value' _number_ ')' [_icondef_] ')' For reference, the following attributes are currently defined by the above BNF: 1. Within a rating service, there are the attributes _category_, _default_, _description_, _icon_, _name_ and _PICS_. 2. Within a category, there are the attributes _description_, _icon_, _integer_, _label_, _label-only_, _max_, _min_, _multivalue_, _name_ and _transmit-as_. 3. Within a named value, there are the attributes _description_, _icon_, _name_ and _value_. 8. Semantics of the "application/pics-service" Description Recall that the MIME type "application/pics-service" is intended to describe a particular rating service in sufficient detail to automatically generate a user interface for configuring content selection software that relies on the rating service. The _quotedURL_ in the _ratingservice_ identifies the service. This identifier is included in all the labels provided by the rating service. Dereferencing the URL yields a human-readable description of the service. If the optional URL for an icon for the rating service is supplied, it is dereferenced relative to the rating service URL. The _name_ of the rating system is intended to be short and human-readable, with the _description_ being a longer description (suitable, perhaps, for a pop-up box). A complete human-readable description is available from the rating service's URL. The _quotedURL_ in the _ratingsystem_ identifies the rating system used by this service. Dereferencing the URL yields a human-readable description of the rating system. All remaining URLs in the "application/pics-service" description are dereferenced relative to the _ratingsystem_ URL, since they describe features of the rating system. The only exception is the rating service's icon, as described above, which is dereferenced relative to the _ratingservice_ URL, so that the service can maintain its own (possibly copyrighted) identity even if it chooses to share a rating system with other services. The machine-readable description also describes the categories used in the rating system. There may be one or more categories for a given rating system. A single document may have a rating on any or all of these categories. Categories can be nested within one another. A category has a "transmission name" which is used in the actual label for a document. Transmission names should be as short as reasonable. They must be unique within a given rating system (i.e. two categories in the same rating system must *not* have the same transmission name). Unlike the name and description strings, transmission names are language-independent. That is, if a rating system is offered in several languages, the transmission names must be the same in all of them. Categories may be nested within one another (as in the case of "color" in the example rating system). In this case, the transmission name is created in the usual way by starting with the outermost category transmission name, adding a "/" and proceeding inward in the nesting. Thus, the example rating system has three categories, and their transmission names are "color", "color/hue", and "color/intensity". In addition to the transmission name, which is required, a category may optionally have an icon and a human-readable description. Icons, if provided, may be of any size. We recommend, however, that icons be as small as possible, since selection software is likely to embed them in displays that include other text and images as well. We also recommend that a rating service's category icons all be the same size. Values in PICS labels may be integers or fractions with no greater range or precision than that provided by IEEE single-precision floating point numbers. The description for each category can specify restrictions on the range of permissible values for certain named attributes. Values may be restricted to have minimum (_min_ attribute, defaults to "-INF") or maximum (_max_ attribute, defaults to "+INF") values. Values can be restricted to integers by giving the attribute _integer_ the value "true" (the default value is "false" if the attribute is omitted, but "true" if it is present with no value specified). Values may be given names by using the _label_ attribute, and may be restricted to having only these named values by setting the attribute _label-only_ to the value "true" (the default value is "false" if the attribute is omitted, but "true" if it is present with no value specified). When a value is given a name, it may optionally have attached an icon and a human-readable description. Finally, a given category may allow more than a single rating for a given document (consider the dimension "sizes available"); this is indicated by setting the attribute _multivalue_ to "true" (default is "false" if the attribute is omitted, but "true" if it is present with no value specified). For rating systems that contain large numbers of categories or deeply nested categories, it is convenient to allow for inheritance of some attribute values. In particular, the attributes of a category _min_, _max_, _multivalue_, _integer_, and _label-only_ are inherited by a category from its parent. These attributes can be given default values for the entire rating service by using the _default_ attributes. This corresponds to value inheritance in object-oriented systems or lexical scoping in programming languages. Note: While it would be nice to restrict the numeric values of ratings to integers, the following examples motivate our decision to permit fractional values. 1. The MPAA rating system was changed to interpolate a new category (PG-13) between "PG" and "R". Had their system been encoded with a tightly packed integer scale it would have required rescinding many existing labels when the change occurred. With fractional numbers there is no need (in principle, at least) to renumber. 2. It may be desirable to include the cost of an item in a content label. This cost may not be an integral number of currency units (think, for example, of a micropayment system in which charges of small fractions of a cent are permitted). 3. Ratings may be generated by statistical means from the responses of many people. Such ratings could be rounded off to an integer before presentation, but this loses much important information. 9. Security Considerations Security considerations will be addressed in other documents in this series and in future revisions of this draft. 10. Glossary application/pics-service A new MIME data type, defined in this document. application/pics-labels A new MIME data type used to transmit one or more _labels_, defined in [1], "Label Syntax and Communication Protocols". BNF Backus-Naur Form (or Backus Normal Form). A notation for describing a formal syntax, used extensively in describing programming languages and computer-readable data formats. category The part of a rating system which describes a particular criterion used for rating. For example, a rating system might have three categories named "sexual material," "violence," and "vocabulary." Also called a _dimension_. content label A data structure containing information about a given document's contents. Also called a _rating_ or _content rating_. The content label may accompany the document it is about or be available separately. content rating See _content label_. dimension See _category_. HTML HyperText Markup Language. A means of representing _hypertext_ documents. Based on _SGML_. See the [2], "RFC 1866". HTTP HyperText Transfer Protocol. Used for retrieving document contents and/or descriptive header information. hypertext Text, graphics, and other media connected through links. MIME Multimedia Internet Message Extension. A technique for sending arbitrary data through electronic mail on the Internet. See [3], "RFC 1521". PICS Platform for Internet Content Selection, the name for both the suite of specification documents of which this is a part, and for the organization writing the documents. For more information, see the PICS home page at: "http://www.w3.org/PICS". rating See _content label_. label bureau A computer system which supplies, via a computer network, ratings of documents. It may or may not provide the documents themselves. rating server See _label bureau_. rating service An individual or organization that assigns labels according to some rating system, and then distributes them, perhaps via a label bureau or via CD-ROM. rating system A method for rating information. A rating system consists of one or more _categories_. scale The range of permissible values for a category. SGML Standard Generalized Markup Language. See ISO 8879. transmission name (of a _category_) The short name intended for use over a network to refer to the category. This is distinct from the category name in as much as the transmission name must be language-independent, encoded in ASCII, and as short as reasonably possible. Within a single _rating system_ the transmission names of all categories must be distinct. URL Uniform Resource Locator. Described in [4], "RFC 1738". A URL describes the location and means of retrieval for a single document. It consists of three components: the "scheme" (protocol used to retrieve a document, like "http" or "ftp"), a host name, and a hierarchical document name within that host. For example "http://www.w3.org/PICS" is the URL of the PICS home page. The scheme for retrieving it is "http," the host is "www.w3.org" and the name within that host is "PICS". UTF-7 An encoding technique that can be used to transmit Unicode over 7-bit ASCII transport systems such as Internet electronic mail. See [5], "RFC 1642". 11. References [1] PICS, "Label Syntax and Communication Protocols", Internet Draft, "draft-pics-labels-00.txt", 11/21/95. [2] T. Berners-Lee, D. Connolly, "Hypertext Markup Language - 2.0", RFC 1866, 11/03/1995. [3] N. Borenstein, N. Freed, "MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies", RFC 1521, 09/23/1993. [4] T. Berners-Lee, L. Masinter, M. McCahill, "Uniform Resource Locators (URLs)", RFC 1738, 12/20/94. [5] D. Goldsmith, M. Davis, "UTF-7 - A Mail-Safe Transformation Format of Unicode", RFC 1642, 7/13/94. 12. Acknowledgments Primary authors of this document: Jim Miller, W3C Paul Resnick, AT&T David Singer, IBM Additional contributors: Brenda Baker, AT&T Tim Berners-Lee, W3C Roxana Bradescu, AT&T Daniel W. Connolly, W3C Roy Fielding, W3C Jay Friedland, SurfWatch Wayne Gramlich, Sun Woodson Hobbs, NewView Rohit Khare, W3C Charlie Kim, Apple John C. Klensin, MCI Tim Krauskopf, Spyglass Ann McCurdy, Microsoft Rich Petke, CompuServe Dave Raggett, W3C Bob Schloss, IBM Ray Soular, SafeSurf Jason Thomas, MIT G. Winfield Treese, OpenMarket Richard Wolpert, Providence Systems 13. Author's Address PICS Technical Committee World Wide Web Consortium 545 Technology Square Cambridge, MA 02139 Phone: 617-253-3194 EMail: pics-spec-comments@w3.org Appendix A: Good Clean Fun Rating Service One of the simplest possible rating systems uses a single category, "Minimum recommended age." We present the machine description for a fictional service that uses this rating system. ((PICS-version 1.0) (rating-system "http://www.gcf.org/our-system/") (rating-service "http://www.gcf.org/our-service/v1.0/") (name "The Good Clean Fun Rating Service") (description "We estimate the maturity required to view materials on the Internet.") (category (name "Minimum Age") (transmit-as "age") (integer true))) Appendix B: RSAC Rating Service As a specific example of a deployed rating service, encoded using the PICS machine-readable description format, we present the service supplied by the Recreational Software Advisory Council (RSAC). They use their own (copyrighted) rating system, which we include with their permission. The rating system contains three categories: Violence, Nudity/Sex, and Language. Each category is rated on a scale from 0 to 4, with a specific description for each value. Intermediate values are not permitted. The URLs presented here are fictitious, but represent reasonable choices should RSAC choose to deploy their system on-line. ((PICS-version 1.0) (rating-system "http://www.rsac.org/Ratings/Description/") (rating-service "http://www.rsac.org/v1.0") (icon "icons/rsac.gif") (name "The RSAC Ratings Service") (description "The Recreational Software Advisory Council rating service. Based on the work of Dr. Donald F. Roberts of Stanford University, who has studied the effects of media on children for nearly 20 years.") (default (label-only true)) (category (transmit-as "v") (name "Violence") (icon "icons/violence.gif") (label (name "Conflict") (description "Harmless conflict; some damage to objects") (value 0) (icon "icons/zero.gif")) (label (name "Fighting") (description "Creatures injured or killed; damage to objects; fighting") (value 1) (icon "icons/one.gif")) (label (name "Killing") (description "Humans injured or killed with small amount of blood") (value 2) (icon "icons/two.gif")) (label (name "Blood and Gore") (description "Humans injured or killed; blood and gore") (value 3) (icon "icons/three.gif")) (label (name "Wanton Violence") (description "Wanton and gratuitous violence; torture; rape") (value 4) (icon "icons/four.gif"))) (category (transmit-as "s") (name "Nudity/Sex") (icon "icons/sex.gif") (label (name "None") (description "No nudity or revealing attire / Romance; no sex") (value 0) (icon "icons/zero.gif")) (label (name "Revealing Attire") (description "Revealing attire / Passionate kissing") (value 1) (icon "icons/one.gif")) (label (name "Partial Nudity") (description "Partial nudity / Clothed sexual touching") (value 2) (icon "icons/two.gif")) (label (name "Frontal Nudity") (description "Non-sexual frontal nudity / Non-explicit sexual activity") (value 3) (icon "icons/three.gif")) (label (name "Explicit") (description "Provocative frontal nudity / Explicit sexual activity; sex crimes") (value 4) (icon "icons/four.gif"))) (category (transmit-as "l") (description "Language") (icon "icons/language.gif") (label (name "Slang") (description "Inoffensive slang; no profanity") (value 0) (icon "icons/zero.gif")) (label (name "Mild Expletives") (description "Mild expletives") (value 1) (icon "icons/one.gif")) (label (name "Expletives") (description "Expletives; non-sexual anatomical references") (value 2) (icon "icons/two.gif")) (label (name "Obscene Gestures") (description "Strong, vulgar language; obscene gestures") (value 3) (icon "icons/three.gif")) (label (name "Explicit") (description "Crude or explicit sexual references") (value 4) (icon "icons/four.gif")))) Appendix C: SafeSurf Rating System SafeSurf, a parents' organization, has established a rating system that is in use at a large and growing number of sites on the Internet. They have provided a machine-readable version of their system to PICS as a demonstration of a more complex rating system that includes sub-categories as well as a document classification system. The following specification includes a full description of the rating part of the SafeSurf system, with only a small stub to represent the classifications. ((PICS-version 1.0) (rating-system "http://www.safesurf.com/ratings/description/") (rating-service "http://www.safesurf.com/v1.0/") (icon "icons/ss~~.gif") (name "SafeSurf Parents' Organization") (description "The SafeSurf SS~~ Rating Standard. Designed by and for parents to empower each family to make informed decisions concerning accessibility of online content. Copyright 1995. All Rights Reserved.") (category (transmit-as "Adult") (name "Adult Themes with Caution Levels") (category (name "Age Range") (transmit-as "0") (label (value 1) (name "All Ages")) (label (value 2) (name "Older Children")) (label (value 3) (name "Teens")) (label (value 4) (name "Older Teens")) (label (value 5) (name "Adult Supervision Recommended")) (label (value 6) (name "Adults")) (label (value 7) (name "Limited to Adults")) (label (value 8) (name "Adults Only")) (label (value 9) (name "Explicitly for Adults"))) (category (name "Profanity") (transmit-as "1") (label (value 1) (name "Subtle Innuendo") (description "Subtly Implied through the use of Slang")) (label (value 2) (name "Explicit Innuendo") (description "Explicitly implied through the use of Slang")) (label (value 3) (name "Technical Reference") (description "Dictionary, encyclopedic, news, technical references")) (label (value 4) (name "Non-Graphic-Artistic") (description "Limited non-sexual expletives used in a artistic fashion")) (label (value 5) (name "Graphic-Artistic") (description "Non-sexual expletives used in a artistic fashion")) (label (value 6) (name "Graphic") (description "Limited use of expletives and obscene gestures")) (label (value 7) (name "Detailed Graphic") (description "Casual use of expletives and obscene gestures")) (label (value 8) (name "Explicit Vulgarity") (description "Heavy use of vulgar language and obscene gestures")) (label (value 9) (name "Explicit and Crude") (description "Saturated with crude sexual references and gestures"))) (category (name "Heterosexual Themes") (transmit-as "2") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Explicit Vulgarity")) (label (value 9) (name "Explicit and Crude"))) (category (name "Homosexual Themes") (transmit-as "3") (label (name "Subtle Innuendo") (value 1)) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference") (description "Dictionary, encyclopedic, news, medical references")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Inviting Adult Participation")) (label (value 9) (name "Explicitly Inviting Adult Participation"))) (category (name "Nudity") (transmit-as "4") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Explicit Vulgarity")) (label (value 9) (name "Explicit and Crude"))) (category (name "Violence") (transmit-as "5") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Inviting Participation in Graphic Interactive Format")) (label (value 9) (name "Encouraging Personal Participation, Weapon Making"))) (category (name "Sex Violence and Profanity") (transmit-as "6") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Explicit Vulgarity")) (label (value 9) (name "Explicit and Crude"))) (category (name "Bigotry") (transmit-as "7") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Literary")) (label (value 5) (name "Graphic-Literary")) (label (value 6) (name "Graphic Discussions")) (label (value 7) (name "Endorsing Hatred")) (label (value 8) (name "Endorsing Violent or Hateful Action")) (label (value 9) (name "Advocating Violent or Hateful Action"))) (category (name "Glorifying Drug Use") (transmit-as "8") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Simulated Interactive Participation")) (label (value 9) (name "Soliciting Personal Participation"))) (category (name "Other Adult Themes") (transmit-as "9") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Reference")) (label (value 4) (name "Non-Graphic-Artistic")) (label (value 5) (name "Graphic-Artistic")) (label (value 6) (name "Graphic")) (label (value 7) (name "Detailed Graphic")) (label (value 8) (name "Explicit Vulgarity")) (label (value 9) (name "Explicit and Crude"))) (category (name "Gambling") (transmit-as "A") (label (value 1) (name "Subtle Innuendo")) (label (value 2) (name "Explicit Innuendo")) (label (value 3) (name "Technical Discussion")) (label (value 4) (name "Non-Graphic-Artistic, Advertising")) (label (value 5) (name "Graphic-Artistic, Advertising")) (label (value 6) (name "Simulated Gambling")) (label (value 7) (name "Real Life Gambling without Stakes")) (label (value 8) (name "Encouraging Interactive Real Life Participation with Stakes")) (label (value 9) (name "Providing Means with Stakes")))) (category (name "Classification with Percentage") (transmit-as "Class") (min 1) (max 100) (integer true) (category (transmit-as "00") (name "General Information")))) This Internet Draft Expires on May 21, 1996