The S120 Tag returns the string value of a named property from a named object. 

Example:

   [[S120:dc:firstName]]

This returns the string value of the "firstName" property of the object named "dc".

Example:

   [[S120:dc:isGiftAmountGreaterThan:$50]]

This returns the string value of the "isGiftAmountGreatherThan" property of the object named "dc", supplying "$50" as an argument to the property method.

The definitive list of what S120 properties are available can only be found by entering [[S120:help]] wherever you want to use it. Then take whatever action is necessary to get to the page or autoresponder that you have entered the S120:help tag on. That will give the list of what values are actually available where you are attempting to use the tag. Below is the current list of known S120 tags for this use.

S120:dc:additionalGift
S120:dc:anonymousDonation
S120:dc:cVSHeader
S120:dc:campaignId
S120:dc:campaignName
S120:dc:campaignType
S120:dc:city
S120:dc:class
S120:dc:contactInfo
S120:dc:country
S120:dc:creditCardDonation
S120:dc:creditCardExpirationDate
S120:dc:creditCardNumber
S120:dc:creditCardType
S120:dc:designatedAddonFmv
S120:dc:designatedAddonPrice
S120:dc:designeeNames
S120:dc:discountCode
S120:dc:donFormId
S120:dc:donationFormName
S120:dc:donationInfo
S120:dc:donationLevelId
S120:dc:donationLevelName
S120:dc:donationLevelValue
S120:dc:donorAddress
S120:dc:donorCity
S120:dc:donorCountry
S120:dc:donorFirstName
S120:dc:donorLastName
S120:dc:donorName
S120:dc:donorSpecifiedAmount
S120:dc:donorState
S120:dc:donorStreet1
S120:dc:donorStreet2
S120:dc:donorStreet3
S120:dc:donorSuffix
S120:dc:donorTitle
S120:dc:donorZip
S120:dc:ecardMessage
S120:dc:ecardRecipients
S120:dc:ecardSelector
S120:dc:ecardSendDate
S120:dc:ecardSenderName
S120:dc:ecardSubject
S120:dc:echeckAccountNumber
S120:dc:echeckRoutingNumber
S120:dc:email
S120:dc:employer
S120:dc:eventName
S120:dc:firstName
S120:dc:fullName
S120:dc:fundName
S120:dc:futurePayments
S120:dc:giftAidStatus
S120:dc:giftAmount
S120:dc:giftType
S120:dc:goodsAndServicesValue
S120:dc:honoreeFullName
S120:dc:honoreeName
S120:dc:honoreeTitle
S120:dc:includeGiftAmountInNotification
S120:dc:initialPayment
S120:dc:interestCategories
S120:dc:jointDonation
S120:dc:jointDonorFirstName
S120:dc:jointDonorFullName
S120:dc:jointDonorLastName
S120:dc:jointDonorMiddleName
S120:dc:jointDonorName
S120:dc:jointDonorTitle
S120:dc:lastName
S120:dc:matchAmount
S120:dc:matchEmail
S120:dc:matchEmployerName
S120:dc:matchFormUrl
S120:dc:matchInstructions
S120:dc:matchPhone
S120:dc:membershipGiftMessageBody
S120:dc:membershipGiftMessageClosing
S120:dc:membershipGiftMessageSignature
S120:dc:membershipGiftMessageSubject
S120:dc:membershipRenewal
S120:dc:memorialDonation
S120:dc:messageToParticipant
S120:dc:middleName
S120:dc:name
S120:dc:newMembership
S120:dc:numberOfItems
S120:dc:occupation
S120:dc:optIn
S120:dc:originalTransAmount
S120:dc:otherAmount
S120:dc:participantName
S120:dc:paymentAmount
S120:dc:paymentMethod
S120:dc:paymentMode
S120:dc:phone
S120:dc:pledgeAmount
S120:dc:postalCode
S120:dc:premiumId
S120:dc:premiumName
S120:dc:premiumSelected
S120:dc:premiumShippingCharge
S120:dc:premiumValue
S120:dc:professionalSuffix
S120:dc:publicRecognitionName
S120:dc:recognitionName
S120:dc:recurringCurrentPaymentNumber
S120:dc:recurringCurrentStatusString
S120:dc:recurringFrequencyLabel
S120:dc:recurringLastPaymentDate
S120:dc:recurringNextPaymentDate
S120:dc:recurringNumberPaymentsCompleted
S120:dc:recurringNumberPaymentsOutstanding
S120:dc:recurringTotalAmountPaid
S120:dc:recurringTotalExpectedGift
S120:dc:recurringTotalNumberOfPayments
S120:dc:recurringTotalPaymentAmount
S120:dc:refundAmount
S120:dc:rewardPointsEarned
S120:dc:salutation
120:dc:shippingCharge
S120:dc:shippingCity
S120:dc:shippingCountry
S120:dc:shippingFirstName
S120:dc:shippingFullName
S120:dc:shippingLastName
S120:dc:shippingPostalCode
S120:dc:shippingStateProvince
S120:dc:shippingStreet1
S120:dc:shippingStreet2
S120:dc:shippingTitle
S120:dc:sponsoreeName
S120:dc:stateProvince
S120:dc:street1
S120:dc:street2
S120:dc:suffix
S120:dc:taxDeductibleValue
S120:dc:taxID
S120:dc:teamCaptainName
S120:dc:teamName
S120:dc:teamRaiser
S120:dc:teamRaiserId
S120:dc:teamraiserOci
S120:dc:teamraiserOciDsp
S120:dc:teamraiserOciPaymentAmount
S120:dc:title
S120:dc:trackingCode
S120:dc:transactionDate
S120:dc:transactionID
S120:dc:transactionSummary
S120:dc:tribute
S120:dc:tributeDonation
S120:dc:tributeHonoreeAddress
S120:dc:tributeMessageBody
S120:dc:tributeMessageClosing
S120:dc:tributeMessageIncludeGiftAmount
S120:dc:tributeMessageSignature
S120:dc:tributeNotifyRecipientAddress
S120:dc:tributeNotifyRecipientCity
S120:dc:tributeNotifyRecipientCountry
S120:dc:tributeNotifyRecipientName
S120:dc:tributeNotifyRecipientState
S120:dc:tributeNotifyRecipientStreet1
S120:dc:tributeNotifyRecipientStreet2
S120:dc:tributeNotifyRecipientStreet3
S120:dc:tributeNotifyRecipientTitle S
S120:dc:tributeNotifyRecipientZip
S120:dc:tributeType