The sablon command line interface.

cat context.json | sablon template.docx output.docx

When no output path is given the rendered document is written to stdout.

The context is a JSON object. A reserved "_sablon" key holds settings rather than template data; its "properties" object becomes the section properties of the render:

{"_sablon": {"properties": {"start_page_number": 42}}, "title": "..."}