> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-ct-user-guides/mrcm-maintenance-tool-user-guide/how-to/view-a-formatted-human-readable-ecl-expression.md).
# View a formatted human-readable ECL expression
| Steps | References | | |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ | --------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------- |
| The following fields can be expanded to show a formatted human-readable presentation of their ECL expression:
- Domain Details - Precoordination Domain Template
- Domain Details - Postcoordination Domain Template
- Attribute Range - Range Constraint
- Attribute Range - Attribute Rule
To show the ECL Expression overlay press :arrow-up-right-from-square: in the right corner of the field entry.
A pop-up overlay is presented which contains a formatted version of the field value ECL expression.
The example to the right shows the Domain Details - Precoordination Domain Template ECL expression for the | Anatomical structure (body structure) | MRCM sub-domain.
Press X in the top right corner of the overlay, or press CLOSE in the lower right corner of the overlay to return to the underlying MRCM Maintenance Tool view.
| |
| This example shows the *Domain Details - Postcoordination Domain Template* ECL expression for the `\| Anatomical structure (body structure) \|` MRCM sub-domain. | | | |
| This example shows the *Attribute Range - Range Constraint* ECL expression for the `\| Laterality (attribute) \|` MRCM attribute. | | | |
| This example shows the *Attribute Range - Attribute Rule* ECL expression for the `\| Laterality (attribute) \|` MRCM attribute. | | | |
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