The Market Data Definition Language main element.
Preamble to MDDL document containing identifying marks of provider and general reference material.
Information about the query (if any) for which this MDDL document was produced.
The status of the query as determined by the sender (whether the query was processed successful or not, etc.).
The user provided reference identifier (if any) for the query.
The verbatim mddlQuery (if any) for which this MDDL document was produced.
Placeholder for (relatively) static content that can be referenced within the document. Advanced feature - see documentation. This is being considered for removal.
Amplifying information for a scheme used as a Controlled Vocabulary. Also, common definition to be referenced from within the main document.
Construct to hold the basic products for single-time (at an instant) or end-of-day quotes.
Construct to hold multiple similar "event"s differentiated by "dateTime".
Container to hold a single-time collection of data in a timeseries. Content model contains a "snap" with additional "dateTime" and "eventType" properties.
Corporate Actions and Events Domain.
Any event - initiated by the issuing company, duly authorized agent, shareholders, or governmental agency - bringing material change to a stock.
All non "corporate action" events NOT materially effecting change (e.g. announcements of pending actions). A Corporate Event may indicate or initiate several resultant Corporate Actions.
Collective Investment Vehicles Domain. A CIV represents shares in an asset or assets.
Annuity Class - Collective Investment Vehicle Domain. Annuity.
Fund Class - Collective Investment Vehicle Domain. Fund.
Exchange Traded Subclass - Fund Class - CIV Domain. Exchange Traded Fund.
Insurance Subclass - Fund Class - CIV Domain. Insurance Fund.
Money Market Subclass - Fund Class - CIV Domain. Money Market Fund.
Mutual Subclass - Fund Class - CIV Domain. Mutual Fund.
Umbrella Subclass - Fund Class - CIV Domain. Umbrella Fund.
Trust Class - CIV Domain. Trust.
Open Ended Investment Subclass - CIV Domain. OEI Trust.
Unit Subclass - CIV Domain. Unit Trust.
Debt Domain. Instruments of debt representing money borrowed and repayment.
Derivatives : rights, warrants, options, futures (etc.).
Derivative Domain - Certificate Class. Certificates derived from other issues.
Derivative Domain - Forward class. A forward settles on a future date after the spot date.
Derivative Domain - Future class. A future is a standardized, transferable, exchange-traded contract that requires delivery of a commodity, bond, currency, or stock, at a specified price (the strike price) on a specified future date.
Derivative Domain - Linked class. Instruments based on the performance or criteria of another instrument (e.g. Perles - Performed Linked Equity Securities).
Derivative Domain - Option class. An option is the right, but not the obligation, to buy (for a call option) or sell (for a put option) a specific amount of a given stock, commodity, currency, or debt at a specified price (the strike price) during a specified period of time.
Derivative Domain - Right class. Rights to purchase, based on current holdings or at a price below public offering, new shares at a predetermined price.
Derivative Domain - Swap class. Agreement to pay differences based on multiple factors or underliers.
Derivative Domain - Warrant Class. Security of the issuer giving the holder the right to purchase securities at a particular price and time.
Entity Domain. Clarifying information about institutions or organizations (e.g. issuers).
Issuer Class - Entity Domain. Issuer.
Equity Domain. Stock representing ownership interest in a firm.
Common Class - Equity Domain. Common stock or ordinaries. Common equities.
Depositary Class - Equity Domain. Depositary Equity (ADR, ADS, Van Aandelen, etc.).
Partnership Class - Equity Domain. Euiqty Partnership.
Limited Subclass - Partnership Class - Equity Domain. Limited Partnership.
Shared Subclass - Partnership Class - Equity Domain. Shared Partnership.
Units Subclass - Partnership Class - Equity Domain. Units Partnership.
Preferred Class - Equity Domain. Preferred Equity.
Foreign Exchange Domain. Instruments for foreign exchange.
Indicators Domain. For all non-index indicators that are NOT instruments of their own.
Interest Rate Class - Indicators Domain. Interest Rate (as an indicator) Information.
Index Domain. Statistical composite indicating relative change in a particular market or collection of instruments.
Container for the parameters of the accrual (start of interest calculation) "Period" indicates start of accrual.
The conventions on which accrual calculations are based.
Controlled Vocabulary identifying method for determining "days in year" and "days in month" of accrual calculation.
Controlled Vocabulary identifying type of accrual convention (e.g. ISDA, ISMA, AFB) that is relevant to the basis.
Street/Mailing address of referenced item - multiple address lines (if needed) are sequenced by "rank". THIS ELEMENT UNDER REVIEW FOR EXTENSION.
Rankings (generally applied to equity instruments) of quality or financial strength as determined by a rankings agency.
Ratings (generally applied to debt instruments) of quality or financial strength as determined by a ratings agency.
An individual or organization empowered to act for or represent another individual or organization.
Controlled Vocabulary identifying the activity or function of the agent.
Restrictions agreed in a covenant. Open text providing descriptive details of the restrictions.
Maximum debt load to remain within covenant restrictions.
Indicates that repayment is made via regular principal and interest payments over time. Schedule would be in ADDITION to schedules provided with interest and principal repayment items.
Indication of behavior of the amortization rate of the life of a debt instrument.
Controlled Vocabulary identifying type of basic amortization schedule.
Amount of debt or number of shares outstanding.
Controlled Vocabulary defining the type of shares/value counted in "amountOutstanding".
Container for various analytic values to aid in analysis of instrument.
Date (and maybe time) instrument (was or will be) announced to the public.
Container to denote data associated with an Ask Quote (aka "Offer").
Date (and/or time) of issue auction.
Descriptive background of security.
backLoad. TO BE REMOVED PENDING VERIFICATION.
Value added to the component instrument's multiplier modified value in the basic formula (see component).
A textual decscription of the strategy applied to the management of the fund.
This element is a container to denote data associated with a Bid Quote.
Controlled Vocabulary denoting the type of corporate action or event of refererence. Also used within "instrumentData" and "placeOfListing" to identify the LAST CAE that took place on this instrument/market.
Controlled Vocabulary identifying the method used for calculation (e.g. average, cumulative...) of a value.
Indicates that the instrument is subject to being redeemed at the demand of the issuer (children identify the parameters of the callable status).
Controlled Vocabulary identifying the type of call or call conventions applicable.
Controlled Vocabulary listing the specific conditions on a call.
Value of outstanding shares (price * number of shares outstanding).
Controlled Vocabulary identifying types of instruments used in capitalization determination.
The limit or upper bound on the referenced price or amount.
Denotes difference between this valuation and a previous valuation (per changeType).
Controlled Vocabulary showing relative direction of last change.
Controlled Vocabulary indicating base value to which "change" is referenced.
Central collection facility where participants maintain accounts against which the credits or debits are posted.
Automated system used for clearing functionality.
Agreed process used for clearing functionality.
Container to hold details of the settlement and clearing components.
Exercisable when less than this quantity or percentage of a debt or debt pool remains.
The final price as of market close (augmented by the "closeType").
Controlled Vocabulary indicating the method by which "close" is calculated (or not).
The date on which an item closes or is no longer available. May be augmented by "closingDateType".
Controlled Vocabulary indicating the type of "closingDate" (e.g. maturity, expiry).
The shorthand notation for a known item (e.g. country, exchange, instrument) from the appropriate Controlled Vocabulary or "scheme".
Controlled Vocabulary indicating relative time ordering of this code (i.e. "previous" or "next").
Controlled Vocabulary indicating type of collateral backing this instrument. Subordinate code identifies pool type, etc. of collateral.
Free text comment used by provider for clarification, if necessary.
A component is a container that identifies (and the relevant valuation of) an instrument used to compute an index and the associated parameters used in that computation. The component value equals the component instruments' value (componentValue) multipled by the multiplier then added to the baseValue all multiplied by the weighting. "component" value=("componentValue" * "multiplier" + "baseValue") * "weighting".
Identifies (one of) the underlying instrument(s) for this component. See "instrumentIdentifier".
The value of the underlying instrument to be used as the component value (as a result of the calculation). See component.
Identifies whether item is compounding and (optionally) the "period" over which compounding takes place.
Multiplier for price of individual item to determine value of contract.
Signifies that instrument is convertible (children identify under which conditions).
Controlled Vocabulary indicating type of conversion applicable to the instrument.
Controlled Vocabulary specifying the country code. Uses ISO 3166 Alpha 2 by default.
Container element outlining the details of the arrangement or deal.
Container holding issue support or other credit enhancement information.
Controlled Vocabulary identifying the type of credit enhancement provided.
Identifies currency and current exchange rate (multiplier) to the prevailing currency.
Controlled Vocabulary identifying the currency code of the price or amount. By default, the ISO 4217 3-character code.
Date (and/or time) of the event or relevant piece of data.
Controlled Vocabulary specifying one of the seven days of the week.
Controlled Vocabulary governing guidelines on interpretation of date if it falls on a non-business day or other "closed" condition.
Specifies which days are relevant to the parent value.
Count of the number of days in a standard month used in the relevant calculation.
Count of the number of days in a standard year used in the relevant calculation.
Controlled Vocabulary identifying specific debt-related indicators.
Container holding information relative to the debt issue.
Container for pricing information of a debt instrument.
Declining schedule.
The default clause for a covenant when no other clause applies.
Signifies that rights to a stock are deferred after those of common and preferred owners.
The period of time used to delay data from this source or market.
Container for the parameters of the delivery. "Period" indicates start/end of delivery times.
Controlled Vocabulary indicating the mode of transport or transfer of the security or product.
Defines the minumum change in the related property.
The denomination of the instrument - the possible values of the scrip which are most likely multiples of the face value.
The depository to be used over the specified period.
The depository processing system to be used over the specified period.
A free-text description of the code if necessary. Not intended for automated processing.
A description of the deviation permissable on an issue. Not currently used.
Controlled Vocabulary indicating the type of deviation used.
A journal of the schedules relevant to an issue.
Controlled Vocabuarly indicating the method of distribution of assets.
The share of profits distributed to a holder usually on a "per share" basis.
Rate of return for an equity instrument. Generally expressed as a percentage or a coefficient of percentage.
Controlled Vocabulary specifying the type of dividends used to calculate the yield provided.
A basic range of time specified in years, months, days, hours, minutes, seconds, or partial seconds.
Earnings reported with an instrument (typically about the issuer) as reported by the issuer or responsible agent.
Reference to which earnings value was used.
Controlled Vocabulary indicating method by which "earnings" are calculated.
Denotes the absolute dateTime of the end of a "period".
The parameters of the enhancement or support provided.
Controlled Vocabulary denoting type of entity (e.g. individual, corporation) described.
Controlled Vocabulary elaborating the type of "event" in a timeseries - the action or description for this event.
The exercise (strike) price of options, futures, warrants, etc.
The rights and timeframe of the holder to exercise issue options.
Controlled Vocabulary denoting the specific type of right that could be exercised.
Signifies that instrument is extendible (e.g. repayment may be extended or maturity changed) and at what times the extension must be claimed.
Date (and/or time) when a date may be extended. Multiple periods require a schedule.
The face or par value of the instrument to be paid by the issuer at the maturity date.
The percentage of principal outstanding as the debt instrument (mortgage) pays down.
Date (and/or time) of first occurence (e.g. when first interest payment is due).
Date (and/or time) when instrument was first negotiated.
First amount for this item (eg. first payment amount for a bond).
Date (and/or time) when instrument was first settled.
Controlled Vocabulary specifying the type of non fixed-rate (e.g. floating rate) note.
Indicates that the number is actually a fraction. "actualDenominator" gives a clue to the denominator of the value (assume 1). If the value is intended to be displayed with a different denominator, "displayDenominator" provides this clue. "displayNumerator" specifies absolutely the fraction to be displayed.
Textual representation or description of the formula used in calculation.
frontLoad. TO BE REMOVED PENDING VERIFICATION.
Controlled Vocabulary enumerating the guiding strategy of the fund.
A reference to the law, laws, or jurisdiction relating to the issue.
The highest valuation over the period specified.
Controlled Vocabulary denoting the type of income, if any, generated by this issue.
The value at which a number (e.g. denomination) is incremented.
The date at which the "indexBaseValue" was determined.
Value added to the indexMultiplier modified sum of the components before applying the indexWeighting. See indexValue.
A detailed textual description of the index and the methodology used in determing the components and weighting factors of the index.
Used in calculation of an index per the basic index formula. Multiplied by the sum of the components before the indexBaseValue is added. See indexValue.
A short description of the purpose of the index indicating the target audience or interest.
The value of the index at the current time (after index calculation performed). The basic formula is indexValue = [(sum of componentValues) * multiplier + indexBaseValue] * indexWeighting.
Used in calculation of an index per the basic index formula. Multplied by the indexMultiplier modified sum of the components after adding the indexBaseValue. See indexValue.
Controlled Vocabulary containing various indicators about the current value (e.g. estimated, official).
Identifies the industry that this entity (e.g. issuer, issuer) is associated with.
Container for basic amplifying information about the instrument.
Controlled Vocabulary denoting the basic form of the instrument (if purchased).
Identifies the instrument for the corresponding market data, calculations, or valuations. It may contain many codes from many schemes with multiple names (including multiple languages). The intent is that enough information be given to uniquely identify the instrument. Note that an instrument may have several identifiers which specify different scope (e.g. market vs. international).
Controlled Vocabulary identifying the current status of the instrument with relation to the identifying information (e.g. listed or superceded).
Controlled Vocabulary indicating the classification or type of instrument (e.g. ISO 10962 CFI code for Classification of Financial Instruments).
Container for the interest rate applicable for the instrument. Includes amplifying information. Stepped rates require a schedule. Performance-based require multiple interestRate elements that are "when" qualified.
The interest payment amount - augmented by the type of payments and when they must be made against the interest. Multiple repayments require a schedule.
Lists those restrictions limiting which instruments can be components.
A brief description of the style of investment strategy.
Itemizes and describes techniques used in investment decisions.
Total original amount for which the issue is published.
Container holding information relative to the issue itself (domain agnostic).
Date (and/or time) issue was made available to the public.
Any fees associated with the issue - may be clarified by issueFeesType.
Controlled Vocabulary specifying the type of fees associated with the issue.
Controlled Vocabulary identifying the type of market issue is placed into.
The price at which this instrument was issued.
A reference (into the issuerClass) of the issuer of this instrument.
An indication that the instrument is changeable (e.g. convertiable, extendible) at the issuer's discretion.
Information about which governing jurisdiction is applicable.
Controlled Vocabulary indicating the specific type of jurisdiction (e.g. municipality or sovereign).
The last (or most recent) valuation.
The most recent relevant (at the discretion of the provider) corporate action or event that took place. This simply identifies the type of CAE and when it took place and does not give the specifics of the event.
Date (and/or time) of last occurence (e.g. last interest payment).
Container for the limited schedule.
Indicates if instrument is (performance, valuation, or otherwise) linked to another instrument or not. If so, the instrument to which the item is linked may be provided. If not, there should be no children to this element.
Controlled Vocabulary identifying the current liquidation status.
Information about a physical region (city, state, country). Note that such information about an issue's locale of incorporation actually applies to the issuer.
Controlled Vocabulary identifying the type of location (registration, domicile, physical, etc.).
The lowest valuation over the period specified.
An indication that the issuer will make whole the value if a call is exercised.
Required. Not an option.
The offset applied to the base value to give the value actually used.
The market center or specialist providing the current quote.
Conditions of the market relating to time of operations.
Container for information derived from the market - dictated based on market of trading.
Identifiers denoting the specific market or markets.
Controlled Vocabulary indicating the state of the market.
Controlled Vocabulary denoting the basic form of the market (e.g. equity, commodity).
Defines the parameters of when an instrument matures and is no longer negotiable or functional.
Date (and/or time) at which an instrument matures or expires.
Controlled Vocabulary denoting the special conditions on the type of maturity (e.g. extendible, fixed, perpetual)
Container for information about the average of the "bid" and "ask" (offer) quotes.
The maximum value a number may take.
The minimum value a number may take.
Container detailing when or why a modification to the issue was made. May be related to the last corporate action, a correct, or other event.
Controlled Vocabulary indicating the type of modification referenced.
The municipality of the location as identified by the "code" and/or "name".
General purpose coefficient applied to the parent property's value.
The textual proper name of an item (e.g. currency, instrument) and the role (e.g. legal, short) for which that name plays. This may be included in multiple languages.
Used to reference a "name" from within a "code" to clarify which name is identified by the code.
Container for all data related to Net Asset Value for a fund.
Any negative pledge or constraints on a covenant.
Contains parameters relating to non-fixed rate (e.g. floating rate or stepped) interest bearing instruments.
Identifies parameters about notification to exercise certain rights (e.g. calls or puts).
An indication of the number of holders of an asset.
A description of the obligor (debtor).
A description of the objective of the instrument.
Controlled Vocabulary denoting the objective of the fund or benchmark.
Controlled Vocabulary detailing the type of issue offer.
The value at the beginning of trading or opening of the market.
Controlled Vocabulary indicating the method used to determine the "open".
Container holding orderbook (full or best bid/ask), market depth, or market maker (exchange) views of current positions of a particular instrument.
Controlled Vocabulary indicating the form of the orderbook information provided - orderbook, marketdepth, marketmaker.
A count of the number of orders from a particular "marketCenter".
The amount (or percentage) for which an instrument can be over alloted (as in Greenshoe option).
Allocation or distribution is not the full amount possible.
The agents, organizations, or individuals involved in a deal or activity.
Controlled Vocabulary denoting the financial or legal status of a particular party.
The debt or loan must be repayed using the same negotiable entity provided.
Dates (and times) on which payment is expected (has happened). Multiple dates require a schedule.
The frequency of expected (actual) payment on the indicated instrument. Refer to the payment schedule if appropriate. A single payment at maturity is noted as the end date on the period.
Date (and/or time) when next-to-last occurence (e.g. usually the last nominal coupon - the final coupon may be different).
Price/Earnings Ratio calculated by dividing the price of a stock by its earnings per share.
Controlled Vocabulary indicating method used to calculate "peRatio".
Controlled Vocabulary indicating how "period" relates to parent.
Denotes a range of time possibily with a fixed "start" and/or "end" time.
The place of listing of an instrument. Usually augmented by an indicatorsType of "official".
(One of) The place(s) of trading of an instrument as identified by the marketIdentifer(s) (of which their may be multiple).
The postal code of the location.
Defines the granularity (e.g. thousandths would be 0.001) of the related property.
The actual value for a complex payment (such as interestPayment) when a schedule is not warranted.
The date (generally period) of delay expected for (re)payment of funds after due date.
Date (and maybe time) of the previous value.
A reference (internal XPath) to the price used in the calculation.
The principal repayment (redemption) amount - augmented by the type of repayments and when they must be made against the principal. Multiple repayments require a schedule.
Amount of principal protection provided at redemption.
Indication that the information is specific to a particular program.
Controlled Vocabulary identifying the type of program.
Minimums necessary to invest in the asset.
Indicates that the instrument is subject to being redeemed at the demand of the holder (children identify the parameters of the put status).
Controlled Vocabulary identifying the type of put applicable.
Controlled Vocabulary listing the specific conditions on a put.
Textual description of the qualified plans of the fund.
Controlled Vocabulary specifying the type of quantity specified - cash, worth, items.
Controlled Vocabulary clarifying the values identified by quantityType. Should reference a controlled vocabulary specific to the dominating parent field.
Container for constraints on quotation size, minimum delta in quote, and precision of quote.
Relative order of precedence. The value of "1" indicates the most significant or first rank.
A quality or subjective indication of the value or stability of the ranked entity.
The actual value for a complex rate (such as interestRate) when a schedule is not warranted.
Indication of parameters surrounding conversion from non-fixed-rate to fixed-rate.
A quality or subjective indication of the value or stability of the rated entity.
Controlled Vocabulary denoting the basic type (e.g. short or long) of the rating.
Date (and/or time) when something is recorded.
The item is recurring based on the frequency defined.
Signifies that instrument is redeemable (children identify under which conditions).
Container for parameters surrounding the redemption of the issue.
Controlled Vocabulary detailing the specific category of redemption.
Specific prohibited acts regulating a covenant.
The region of the location as identified by "code" and/or "name".
Controlled Vocabulary detailing the current registration status of the issue.
The act(s) or law(s) regulating the instrument.
Container for elements related to regulation of the instrument.
The instrument with some relation or relevance to the current instrument (e.g. convertible to). NOT an underlying instrument.
Controlled Vocabulary listing the type of relationship between two instruments (other than underyling).
The period for which a relationship is valid.
This valuation supercedes a previous valuation, with this sequence number, in another MDDL document.
An indication that restrictions on investment or sale do exist although they may not be listed here.
The gross proceeds from delivery or sale.
Controlled Vocabulary identifying the formal role for which the referenced name is to be used.
Controlled Vocabulary indicating the type of rules that are applicable.
Controlled Vocabulary identifying the restrictions on sales of this instrument.
A calendar when specific events will (or did) take place.
An event that takes place within a schedule - augmented by "scheduleEventType".
Controlled Vocabulary listing the specific event that will happen (happened) at the scheduled time.
Controlled Vocabulary indicating scope of coverage of referenced item.
Identifiers denoting the subsection of a market (e.g. stratification, group, or subset). May include a reference to the index (or fund) to which this instrument belongs.
Controlled Vocabulary identifying the type of segment (subsegment) within a market to which an instrument belongs.
An indication from the provider of the relative sequence of this valuation to a previous valuation in another MDDL document.
The trading session of a particular market.
Controlled Vocabulary indicating the current session status.
Final price as dictated by the governing rules of the regulating agency (or exchange).
Date (and/or time) of (anticipated) settlement.
Controlled Vocabulary indicating the form of "settlement".
Defines the number of basic items that make up a contract. Complex contracts may require multiple underlying instruments or textual description (comment).
The value used in the sink computation.
Indicates that the fund is a sinking fund and all parameters surrounding a sinking fund.
Controlled Vocabulary detailing the type of sinking fund.
Controlled Vocabulary detailing the type of sink computation used.
A count of the number of units in a bundle (for example, the number of shares in a trade).
Controlled Vocabulary specifying any action or processing associated with this snap.
Parameters surrounding a soft call of the option.
The source of the data provided. Note that the source of the MDDL instance document (in the header) may likely be a different organization that the source of a particular data element (like a broker).
A calendar of special redemption dates (and/or times) and events.
Container for information about spread between the "bid" and "ask" quotes.
Used to denote the absolute dateTime of the start of a "period".
State or province of a location as identified by "code" and/or "name".
Indicates that the interest is separable from the principal.
Controlled Vocabulary listing the type of strip that is applicable.
The minimum number of subscriptions over the indicated period to fulfill the issue.
Magnitude of support provided by the indicated agent.
Controlled Vocabulary illustrating the type of consumer for which this issue is targeted.
Container for parameters surrounding taxation of the instrument.
Instrument is tax exempt in the governing jurisdiction(s).
There are tax reasons that affect the longevity of this instrument.
Controlled Vocabulary identifying the type of tax applicable.
Textual description of the terms surrounding an instrument parameter.
Controlled Vocabulary showing relative direction of last tick.
Controlled Vocabulary identifying the relationship of the events within a timeseries.
Controlled Vocabulary specifying the primary time zone of relevant activity.
Container for all data related to a "trade".
Controlled Vocabulary detailed why trading on an instrument is halted (when tradingStatusType=halted).
Controlled Vocabulary detailing prevailing trading restrictions in effect.
Controlled Vocabulary indicating the current trading status.
Controlled Vocabulary specifying type of portion applicable. Literally "slice".
Transfer Agent for this transaction.
Number of items to be transferred - there may be multiple choices identified by "rank".
The total amount of capital exchanging hands.
Container for underlying components of an instrument.
Container for the information applicable to underwriting of the issue.
Fees associated with underwriting the issue - may be clarified by underwritingFeesType.
Controlled Vocabulary specifying the type of fees incurred for underwriting.
The nominal quantity of financial instruments that must be purchased or exercised. Units defined by "unitType".
Controlled Vocabulary indicating the unit of count (of the size).
A textual description of the use of the proceeds from the issue.
The actual value used as the basis (rather than a pointer to it).
The reference (internally) to the value used in the calculation of the current value.
Controlled Vocabulary indicating the type of valuation (e.g. relative, absolute).
Characteristic of an instrument to rise or fall sharply in price within a short-term period. Also known as 'beta'.
Controlled Vocabulary identifying the type of volatility calculation.
Controlled Vocabulary indicating method used to calculate "volatility".
Number of items traded in the period defined.
Controlled Vocabulary indicating how "volume" is calculated.
Controlled Vocabulary specifying the voting rights of the holder of the issue.
Volume Weighted Average Price determined by multiplying each trade by its volume then dividing by the volume for the day.
Volume Weighted Open Price determined by multiplying each trade by its volume then dividing by the volume over a certain period during the open.
Used in calculation of a component of an index per the basic index formula. See "multiplier".
Rate of return. Generally used for debtDomain pricing.
Controlled Vocabulary specifying the type of yield provided.