Electronic invoicing - Part 4: Guidelines on interoperability of electronic invoices at the transmission level
60.60 Standard published
Electronic public procurement - Business interoperability interfaces (BII), e-Tendering - Part 101: Overview
60.60 Standard published
Electronic public procurement - Business interoperability interfaces (BII), e-Catalogue - Part 101: Overview
60.60 Standard published
Electronic public procurement - Business interoperability interfaces (BII), e-Ordering - Part 101: Overview
60.60 Standard published
Electronic public procurement - Business interoperability interfaces (BII), e-Fulfilment - Part 101: Overview
60.60 Standard published
Interoperability of Flight Data Processing (Air Traffic Control - Air Traffic Control) for application under the Single European Sky - Interoperability Regulation EC 552/2004
90.93 Standard confirmed
Biometrics Interoperability profiles - Best Practices for slap tenprint captures
90.93 Standard confirmed
Intelligent transport systems - ESafety - Interoperability and user choice in eCall aftermarket and third party eCall services
90.93 Standard confirmed
Interoperability of security systems for the surveillance of widezones
90.93 Standard confirmed
Interoperability of security systems for the surveillance of widezones
90.93 Standard confirmed
Urban search and rescue (USaR) robotic platform technical and procedural interoperability - Guide
60.60 Standard published
Urban search and rescue (USaR) robotic platform technical and procedural interoperability - Guide
60.60 Standard published
Crisis and disaster management - Semantic and syntactic interoperability
90.93 Standard confirmed
European Connected Factory Platform for Agile Manufacturing Interoperability (EFPFInterOp)
60.60 Standard published
European Connected Factory Platform for Agile Manufacturing Interoperability (EFPFInterOp)
60.60 Standard published
Electronic fee collection - Interoperability application profile for DSRC
60.60 Standard published
Film identification - Enhancing interoperability of metadata - Element sets and structures
90.93 Standard confirmed
Road vehicles and Tyre Pressure Gauges (TPG) - Interoperability between Tyre Information Systems (TIS) and TPG - Interfaces and Requirements
90.93 Standard confirmed
Railway Applications - Fixed installations and rolling stock - Technical criteria for the coordination between electric traction power supply systems and rolling stock to achieve interoperability - Part 1: General
60.60 Standard published
Railway Applications - Power supply and rolling stock - Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability
60.60 Standard published
Railway Applications - Power supply and rolling stock - Technical criteria for the coordination between power supply (substation) and rolling stock to achieve interoperability
60.60 Standard published
Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits
60.60 Standard published
Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 1: Track circuits
60.60 Standard published
Railway Applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 2: Axle counters
60.60 Standard published
Railway Applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 2: Axle counters
60.60 Standard published
Railway applications - Technical parameters of train detection systems for the interoperability of the trans-European railway system - Part 2: Axle counters
60.60 Standard published
Alarm and electronic security systems - Part 11-31: Electronic access control systems - Core interoperability protocol based on Web services
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 100: CIM profiles to XML schema mapping
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 2: End to end quality codes for supervisory control and data acquisition (SCADA)
60.60 Standard published
Video surveillance systems for use in security applications - Part 2-2: Video transmission protocols - IP interoperability implementation based on HTTP and REST services
60.60 Standard published
Multimedia home server systems - Rights information interoperability for IPTV
60.60 Standard published
Multimedia systems - Guide to the recommended characteristics of analogue interfaces to achieve interoperability
60.60 Standard published
Interoperability specifications of common external power supply (EPS) for use with data-enabled mobile telephones
60.60 Standard published
Interoperability specifications and communication method for external power supplies used with computing and consumer electronics devices
60.60 Standard published
Health informatics - Device interoperability - Part 10101: Point-of-care medical device communication - Nomenclature (ISO/IEEE 11073-10101:2020)
60.60 Standard published
Health informatics - Device interoperability - Part 20701: Point-of-care medical device communication - Service oriented medical device exchange architecture and protocol binding (ISO/IEEE 11073-20701:2020)
60.60 Standard published
Advanced automation technologies and their applications - Requirements for establishing manufacturing enterprise process interoperability - Part 1: Framework for enterprise interoperability (ISO 11354-1:2011)
60.60 Standard published
Dentistry - Interoperability of CAD/CAM Systems (ISO 18618:2022)
60.60 Standard published
Electrically propelled road vehicles - Magnetic field wireless power transfer - Safety and interoperability requirements (ISO 19363:2020)
60.60 Standard published
Societal security - Video-surveillance - Export interoperability (ISO 22311:2012)
60.60 Standard published
Microfluidic devices - Interoperability requirements for dimensions, connections and initial device classification (ISO 22916:2022)
60.60 Standard published
Health Informatics - Interoperability and integration reference architecture - Model and framework (ISO 23903:2021, Corrected version 2021-07)
60.60 Standard published
Health informatics - Device interoperability - Part 10201: Point-of-care medical device communication - Domain information model (ISO/IEEE 11073-10201:2020)
60.60 Standard published
Health informatics - Device interoperability - Part 10404: Personal health device communication - Device specialization - Pulse oximeter (ISO/IEEE 11073-10404:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 10407: Personal health device communication - Device specialization - Blood pressure monitor (ISO/IEEE 11073-10407:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 10408: Personal health device communication - Device specialization - Thermometer (ISO/IEEE 11073-10408:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 10415: Personal health device communication - Device specialization - Weighing scale (ISO/IEEE 11073-10415:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 10420: Personal health device communication - Device specialization - Body composition analyzer (ISO/IEEE 11073-10420:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 20601: Personal health device communication - Application profile - Optimized exchange protocol (ISO/IEEE 11073-20601:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 40101: Foundational - Cybersecurity - Processes for vulnerability assessment (ISO/IEEE 11073-40101:2022)
60.60 Standard published
Health informatics - Device interoperability - Part 40102: Foundational - Cybersecurity - Capabilities for mitigation (ISO/IEEE 11073-40102:2022)
60.60 Standard published
Alarm and electronic security systems - Part 11-31: Electronic access control systems - Core interoperability protocol based on Web services
60.60 Standard published
Multimedia systems - Guide to the recommended characteristics of analogue interfaces to achieve interoperability (GMT)
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 100: CIM profiles to XML schema mapping
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 2: End to end quality codes for supervisory control and data acquisition (SCADA)
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 10: Low-power mode
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 1-1: Architecture and protocols - Core architecture and protocols
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 1-2: Architecture and protocols - Extended Digital Media Renderer
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 1-3: Architectures and protocols - Cloud access
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 2: Media format profiles
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 3: DLNA link protection
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 4: DRM interoperability solutions
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 5: Device Profiles
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 6-1: Remote User Interface - HTML5
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 6-2: Remote user interface - RVU
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 7: Authentication
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 8: Diagnostics
60.60 Standard published
Digital living network alliance (DLNA) home networked device interoperability guidelines - Part 9: HTTP Adaptive Delivery
60.60 Standard published
Interoperability specifications of common external power supply (EPS) for use with data-enabled mobile telephones
60.60 Standard published
Multimedia home server systems - Rights information interoperability for IPTV
60.60 Standard published
Interoperability specifications and communication method for external power supplies used with computing and consumer electronics devices
60.60 Standard published
Electric vehicle wireless power transfer (WPT) systems - Part 5: Interoperability and safety of dynamic wireless power transfer (D-WPT) for electric vehicles
60.60 Standard published
Electric vehicle battery swap system - Part 3: Particular safety and interoperability requirements for battery swap systems operating with removable RESS/battery systems
60.60 Standard published
Reference standards portfolio (RSP) on interoperability and connectivity for active assisted living (AAL) in the connected home environment (CHE)
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 103: Standard profiling
60.60 Standard published
Power systems management and associated information exchange - Interoperability in the long term - Part 102: CIM - IEC 61850 harmonization
60.60 Standard published
Advanced automation technologies and their applications — Requirements for establishing manufacturing enterprise process interoperability — Part 1: Framework for enterprise interoperability
90.60 Close of review
Advanced automation technologies and their applications — Requirements for establishing manufacturing enterprise process interoperability — Part 2: Maturity model for assessing enterprise interoperability
90.60 Close of review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 1: Framework
90.60 Close of review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 2: Profiling methodology
90.20 Standard under periodical review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 3: Interface services, protocols and capability templates
90.20 Standard under periodical review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 4: Conformance test methods, criteria and reports
90.60 Close of review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 5: Methodology for profile matching using multiple capability class structures
90.20 Standard under periodical review
Industrial automation systems and integration — Manufacturing software capability profiling for interoperability — Part 6: Interface services and protocols for matching profiles based on multiple capability class structures
90.60 Close of review
Automation systems and integration — Interoperability of capability units for manufacturing application solutions — Part 1: Interoperability criteria of capability units per application requirements
90.60 Close of review
Automation systems and integration — Interoperability of capability units for manufacturing application solutions — Part 2: Capability templates and software unit cataloguing
90.60 Close of review
Automation systems and integration — Interoperability of capability units for manufacturing application solutions — Part 3: Verification and validation of interoperability among capability units
90.60 Close of review
Automation systems and integration — Interoperability of capability units for manufacturing application solutions — Part 4: Capability unit assessment for the manufacturing application requirements
90.20 Standard under periodical review
Electrically propelled road vehicles — Magnetic field wireless power transfer — Safety and interoperability requirements
90.92 Standard to be revised
Information and documentation — Data exchange protocol for interoperability and preservation
90.93 Standard confirmed
Irrigation techniques — Remote monitoring and control for irrigation — Part 3: Interoperability
60.60 Standard published
Security and resilience — Authenticity, integrity and trust for products and documents — Guidelines for establishing interoperability among object identification systems to deter counterfeiting and illicit trade
90.93 Standard confirmed
Security and resilience — Authenticity, integrity and trust for products and documents — Guidelines to establish a framework for trust and interoperability
60.60 Standard published
Microfluidic devices — Interoperability requirements for dimensions, connections and initial device classification
90.92 Standard to be revised
Autonomous system and fleet management system interoperability
60.60 Standard published
Health informatics — Interoperability and integration reference architecture — Model and framework
60.60 Standard published
Information and documentation — Thesauri and interoperability with other vocabularies — Part 1: Thesauri for information retrieval
90.92 Standard to be revised
Information and documentation — Thesauri and interoperability with other vocabularies — Part 2: Interoperability with other vocabularies
90.93 Standard confirmed
Ships and marine technology — Interoperability of smart applications for ships
60.60 Standard published
Health informatics — Interoperability of public health emergency preparedness and response information systems
60.60 Standard published
Biotechnology — Data interoperability for stem cell data — Part 1: Framework
60.60 Standard published
Information processing — Data encipherment — Physical layer interoperability requirements
90.93 Standard confirmed
Information technology — Interoperability with assistive technology (AT) — Part 1: Requirements and recommendations for interoperability
90.93 Standard confirmed
Information technology — Coding of multimedia and hypermedia information — Part 7: Interoperability and conformance testing for ISO/IEC 13522-5
90.93 Standard confirmed
Information technology — Computer graphics and image processing — The Virtual Reality Modeling Language — Part 1: Functional specification and UTF-8 encoding — Amendment 1: Enhanced interoperability
60.60 Standard published
Information technology — Home Electronic System — Guidelines for product interoperability — Part 1: Introduction
90.93 Standard confirmed
Information technology - Home electronic system - Guidelines for product interoperability - Part 1: Introduction
60.60 Standard published
Information technology — Home Electronic System — Guidelines for product interoperability — Part 2: Taxonomy and application interoperability model
90.93 Standard confirmed
Information technology - Home electronic system (HES) - Guidelines for product interoperability - Part 2: Taxonomy and application interoperability model
60.60 Standard published
Information technology — Object Management Group — Common Object Request Broker Architecture (CORBA) — Part 2: Interoperability
90.60 Close of review
Information technology — Metamodel framework for interoperability (MFI) — Part 10: Core model and basic mapping
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 1: Framework
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 12: Metamodel for information model registration
90.93 Standard confirmed
Information technology — Metamodel framework for interoperability (MFI) — Part 12: Metamodel for information model registration — Amendment 1: Alignment with Edition 4 of ISO/IEC 11179-3
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 16: Metamodel for document model registration
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 16: Metamodel for document model registration — Amendment 1: Alignment with Edition 4 of ISO/IEC 11179-3
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 3: Metamodel for ontology registration
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 3: Metamodel for ontology registration — Amendment 1: Alignment with Edition 4 of ISO/IEC 11179-3
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 5: Metamodel for process model registration
90.93 Standard confirmed
Information technology — Metamodel framework for interoperability (MFI) — Part 6: Registry Summary
90.93 Standard confirmed
Information technology — Metamodel framework for interoperability (MFI) — Part 6: Registry Summary — Amendment 1: Alignment with Edition 4 of ISO/IEC 11179-3
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 7: Metamodel for service model registration
90.93 Standard confirmed
Information technology — Metamodel framework for interoperability (MFI) — Part 8: Metamodel for role and goal model registration
90.93 Standard confirmed
Information technology — Biometric performance testing and reporting — Part 4: Interoperability performance testing
90.93 Standard confirmed
Information technology — Cloud computing — Interoperability and portability
90.92 Standard to be revised
Information technology for learning, education and training — Language accessibility and human interface equivalencies (HIEs) in e-learning applications — Part 1: Framework and reference model for semantic interoperability
90.92 Standard to be revised
Information technology — Metadata Registries Interoperability and Bindings (MDR-IB) — Part 1: Framework, common vocabulary, and common provisions for conformance
90.93 Standard confirmed
Information technology — Metadata Registries Interoperability and Bindings (MDR-IB) — Part 2: Coding bindings
90.93 Standard confirmed
Information technology — Metadata Registries Interoperability and Bindings (MDR-IB) — Part 3: API bindings
90.93 Standard confirmed
Information technology — Metadata Registries Interoperability and Bindings (MDR-IB) — Part 4: Protocol bindings
90.93 Standard confirmed
Information technology — Metadata Registries Interoperability and Bindings (MDR-IB) — Part 5: Profiles
90.60 Close of review
Internet of things (IoT) — Interoperability for IoT systems — Part 1: Framework
60.60 Standard published
Internet of Things (IoT) - Interoperability for IoT systems - Part 1: Framework
60.60 Standard published
Internet of things (IoT) — Interoperability for IoT systems — Part 2: Transport interoperability
60.60 Standard published
Internet of Things (IoT) - Interoperability for IoT systems - Part 2: Transport interoperability
60.60 Standard published
Internet of things (IoT) — Interoperability for IoT systems — Part 3: Semantic interoperability
60.60 Standard published
Internet of Things (IoT) - Interoperability for IoT systems - Part 3: Semantic interoperability
60.60 Standard published
Internet of things (IoT) — Interoperability for IoT systems — Part 4: Syntactic interoperability
60.60 Standard published
Internet of Things (IoT) - Interoperability for IoT systems - Part 4: Syntactic interoperability
60.60 Standard published
Information technology — Biometric profiles for interoperability and data interchange — Part 1: Overview of biometric systems and biometric profiles
90.93 Standard confirmed
Information technology — Biometric profiles for interoperability and data interchange — Part 2: Physical access control for employees at airports
90.93 Standard confirmed
Information technology — Biometric profiles for interoperability and data interchange — Part 3: Biometrics-based verification and identification of seafarers
90.93 Standard confirmed
Identification cards — Integrated circuit card programming interfaces — Part 6: Registration authority procedures for the authentication protocols for interoperability
90.93 Standard confirmed
Information technology — Sensor networks: Sensor Network Reference Architecture (SNRA) — Part 7: Interoperability guidelines
60.60 Standard published
Information technology -- Sensor networks: Sensor Network Reference Architecture (SNRA) -- Part 7: Interoperability guidelines
60.60 Standard published
Information technology — Web Services Interoperability — WS-I Basic Profile Version 1.1
90.93 Standard confirmed
Information technology — Web Services Interoperability — WS-I Attachments Profile Version 1.0
90.93 Standard confirmed
Information technology — Web Services Interoperability — WS-I Simple SOAP Binding Profile Version 1.0
90.93 Standard confirmed
Information technology — Underwater acoustic sensor network (UWASN) — Part 4: Interoperability
60.60 Standard published
Information technology - Underwater Acoustic Sensor Network (UWASN) - Part 4: Interoperability
60.60 Standard published
Internet of Things (IoT) — Data exchange platform for IoT services — Part 2: Transport interoperability between nodal points
60.60 Standard published
Internet of Things (IoT) – Data exchange platform for IoT services – Part 2: Transport interoperability between nodal points
60.60 Standard published
Internet of Things (IoT) — Functional architecture for resource identifier interoperability
60.60 Standard published
Internet of Things (IoT) - Functional architecture for resource identifier interoperability
60.60 Standard published
Smart city concept model — Guidance for establishing a model for data interoperability
90.93 Standard confirmed
Information technology — Extensible biometric data interchange formats — Part 4: Finger image data — Amendment 1: Extension towards improved interoperability with ANSI/NIST-ITL
60.60 Standard published
Identification cards — Integrated circuit cards — Part 8: Commands and mechanisms for security operations — Amendment 1: Interoperability for the interchange of security operations using quantum safe cryptography
60.60 Standard published
Information technology — Interoperability with assistive technology (AT) — Part 2: Windows accessibility application programming interface (API)
60.60 Standard published
Information technology — Interoperability with assistive technology (AT) — Part 3: IAccessible2 accessibility application programming interface (API)
90.93 Standard confirmed
Information technology — Interoperability with assistive technology (AT) — Part 4: Linux/UNIX graphical environments accessibility API
90.93 Standard confirmed
Information technology — Interoperability with Assistive Technology (AT) — Part 6: Java accessibility application programming interface (API)
90.93 Standard confirmed
Information technology — Home Electronic System (HES) application model — Part 3-2: GridWise interoperability context-setting framework
60.60 Standard published
Information technology - Home electronic system application model - Part 3-2: GridWise - Interoperability context-setting framework
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 9: On demand model selection
60.60 Standard published
Information technology — Cultural and linguistic interoperability — Definitions and relationship between symbols, icons, animated icons, pictograms, characters and glyphs
60.60 Standard published
Information technology for learning, education and training — Learning analytics interoperability — Part 1: Reference model
60.60 Standard published
Information technology for learning, education and training — Learning analytics interoperability — Part 2: System requirements
60.60 Standard published
Information technology — Metamodel framework for interoperability (MFI) — Part 13: Metamodel for form design registration
90.92 Standard to be revised
Information technology for learning, education and training — Learning analytics interoperability — Part 3: Guidelines for data interoperability
90.93 Standard confirmed
Information technology for learning, education and training — Learning analytics interoperability — Part 4: Privacy and data protection policies
90.93 Standard confirmed
Health informatics — Device interoperability — Part 10101: Point-of-care medical device communication — Nomenclature
60.60 Standard published
Health informatics — Device interoperability — Part 10201: Point-of-care medical device communication — Domain information model
60.60 Standard published
Health informatics — Device interoperability — Part 10206: Personal health device communication — Abstract content information model
60.60 Standard published
Health informatics — Device interoperability — Part 10404: Personal health device communication — Device specialization — Pulse oximeter
60.60 Standard published
Health informatics — Device interoperability — Part 10407: Personal health device communication — Device specialization — Blood pressure monitor
60.60 Standard published
Health informatics — Device interoperability — Part 10408: Personal health device communication — Device specialization — Thermometer
60.60 Standard published
Health informatics — Device interoperability — Part 10415: Personal health device communication — Device specialization — Weighing scale
60.60 Standard published
Health informatics — Device interoperability — Part 10420: Personal health device communication — Device specialization — Body composition analyzer
60.60 Standard published
Health informatics — Device interoperability — Part 10421: Personal health device communication — Device specialization — Peak expiratory flow monitor (peak flow)
60.60 Standard published
Health informatics — Device interoperability — Part 10425: Personal health device communication — Device specialization — Continuous Glucose Monitor (CGM)
60.60 Standard published
Health informatics — Device interoperability — Part 10471: Personal health device communication — Device specialization — Independent living activity hub
60.60 Standard published
Health informatics — Device interoperability — Part 10472: Personal health device communication — Device specialization — Medication monitor
60.60 Standard published
Health informatics — Device interoperability — Part 10700: Point‐of‐care medical device communication — Standard for base requirements for participants in a Service‐oriented Device Connectivity (SDC) system
60.60 Standard published
Health informatics — Device interoperability — Part 10701: Point-of-care medical device communication — Metric provisioning by participants in a Service-oriented Device Connectivity (SDC) system
60.60 Standard published
Health informatics — Device interoperability — Part 20601: Personal health device communication — Application profile — Optimized exchange protocol
60.60 Standard published
Health informatics — Device interoperability — Part 20701: Point-of-care medical device communication — Service oriented medical device exchange architecture and protocol binding
60.60 Standard published
Health informatics — Device interoperability — Part 40101: Foundational — Cybersecurity — Processes for vulnerability assessment
60.60 Standard published
Health informatics — Device interoperability — Part 40102: Foundational — Cybersecurity — Capabilities for mitigation
60.60 Standard published
Health informatics — Interoperability of telehealth systems and networks — Part 1: Introduction and definitions
60.60 Standard published
Health informatics — Interoperability of telehealth systems and networks — Part 2: Real-time systems
60.60 Standard published
Health informatics — Interoperability and compatibility in messaging and communication standards — Key characteristics
60.60 Standard published
Intelligent transport systems — Interoperability between interoperable fare management (IFM) systems and near field communication (NFC) mobile devices
60.60 Standard published
Automation systems and integration — Oil and gas interoperability — Part 1: Overview and fundamental principles
90.60 Close of review
