--- /dev/null
+#
+# Tag set for internal Explain-data management
+#
+
+name explain
+type 4
+include tagsetm.tag
+
+#
+# Explain categories
+#
+tag 0 targetInfo structured
+tag 1 databaseInfo structured
+tag 2 schemaInfo structured
+tag 3 tagSetInfo structured
+tag 4 recordSyntaxInfo structured
+# ....
+
+#
+# TargetInfo
+#
+tag 102 name string
+tag 103 recentNews string
+tag 104 icon structured
+tag 105 namedResultSets bool
+tag 106 multipleDbSearch bool
+tag 107 maxResultSets numeric
+tag 108 maxResultSize numeric
+tag 109 maxTerms numeric
+tag 110 timeoutInterval intunit
+tag 111 welcomeMessage string
+tag 112 contactInfo structured
+tag 113 description string
+tag 114 nicknames structured
+tag 115 usageRest string
+tag 116 paymentAddr string
+tag 117 hours string
+tag 118 dbCombinations structured
+tag 119 address structured
+
+#
+# DatabaseInfo
+#
+tag 201 userFee bool
+tag 202 available bool
+tag 203 titleString bool
+tag 205 associatedDbs structured
+tag 206 subDbs structured
+tag 207 disclaimers string
+tag 208 news string
+tag 209 recordCount structured
+tag 210 recordCountActual numeric
+tag 211 recordCountApprox numeric
+tag 212 defaultOrder string
+tag 213 avRecordSize numeric
+tag 214 maxRecordSize numeric
+tag 215 hours string
+tag 216 bestTime string
+tag 217 lastUpdate generalizedtime
+tag 218 updateInterval intunit
+tag 219 coverage string
+tag 220 proprietary bool
+tag 221 copyrightText string
+tag 222 copyrightNotice string
+tag 223 producerContactInfo structured
+tag 224 supplierContactInfo structured
+tag 225 submissionContactInfo structured
+
+
+#
+# AccessInfo
+#
+tag 500 accessinfo structured
+tag 501 queryTypesSupported structured
+tag 503 diagnosticSets structured
+tag 504 diagnosticSet oid
+tag 505 attributeSetIds structured
+tag 506 attributeSetId oid
+tag 507 schemas structured
+tag 508 schema oid
+tag 509 recordSyntaxes structured
+tag 510 recordSyntax oid
+tag 511 resourceChallenges structured
+tag 512 resourceChallenge oid
+tag 513 restrictedAccess structured
+tag 514 costInfo structured
+
+tag 600 commonInfo structured
+tag 601 dateAdded generalizedtime
+tag 602 dateChanged generalizedtime
+tag 603 expiry generalizedtime
+tag 604 languageCode string