> For the complete documentation index, see [llms.txt](https://devdocs.olisystems.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://devdocs.olisystems.com/process-api-input-specification/data-object/flowsheet-object/properties-object.md).

# "properties" object

This JSON "properties" object is provided to the run Process API call as the input for the calculation.