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This is a guide to using the SNOMED CT Machine Readable Content Model (MRCM) Maintenance Tool.

The MRCM Maintenance Tool is available here:

• https://authoring.ihtsdotools.org/mrcm

• Anyone who needs to see a representation of the Machine Readable Content Model (MRCM) in a human-readable interactive way.
• SNOMED CT authors and reviewers.
• Maintainers and publishers of the MRCM.

• The MRCM Maintenance Tool (in view mode) presents a human-readable and navigable interface for the rules and constraints applicable to the SNOMED CT concept model.
• It provides an online MRCM reference for SNOMED CT content authors and reviewers.

• Browse the MRCM rules for SNOMED CT constrained domains, associated attributes and their applicable ranges.
• See ECL expression constraints for domains and attributes.
• See the domains associated with a particular attribute.
• See the attributes associated with MRCM-constrained sub-domains.
• See which concepts match a selected domain, attribute and attribute range.

• Any time, subject to occasional maintenance - the service is an online web-based application running continuously between occasional scheduled or emergency maintenance.
• Scheduled maintenance may include new features, improvements, defect fixes and hosting environment updates.
• Emergency maintenance may include operating system patches and security updates as well as high priority defect fixes.

• Anywhere you can use a web browser with a preferred screen size of 1600 x 900 pixels or greater. Lower resolutions may be usable, but not optimised for the application components screen layout. The application is designed for use and tested in the Chrome web browser.

• The MRCM Maintenance Tool is a web services application designed to be used on a personal computer with a good internet connection via the Google Chrome web browser.
• Recommended client platform requirements:
  • Operating System and hardware specifications as for Chrome
  • Minimum monitor resolutions:
    • 1600 x 900 px (HD+ 16:9)
    • 1680 x 1050 px (WSXGA+ 16:10)
    • 1600 x 1200 px (UXGA 4:3)
  • Internet connection:
    • Broadband (4G minimum)
• Other combinations of web browsers, machine hardware, lower screen resolutions and slower internet connectivity may still work but are not optimised and not supported.