How to create a letter from a template

WriteUpp API appointment reporting.md

At the command line:

cd "/Users/john/workspace/Obsidian/Psychotherapy Notes/170 Letter Templates"

For current client

pandoc --lua-filter=expand_meta.lua --pdf-engine=xelatex -o "Statement of Hours.pdf" "Statement of Hours - Active Client.md"

For former client

pandoc --lua-filter=expand_meta.lua --pdf-engine=xelatex -o "Statement of Hours.pdf" "Statement of Hours - Former Client.md"

Date

If you want the letter to have today’s date, set the YAML date field to \\today.

You may wish to append the client’s name in the -o parameter

Example letter: Statement of Hours - Active Client.md

The expand_meta.lua is what allows pandoc to replace all the placeholders

Contents of expand_meta.lua as of Feb 2026

This is stored according to

Alternative location for filters

Alternative Place for Scripts (e.g. replacefields.lua)

~/.pandoc/filters

Pandoc References

e.g.

/Users/john/.pandoc/filters/replacefields.lua

Recent versions of Zettlr are storing lua filters in

 
cd '/Users/john/Library/Application Support/Zettlr/lua-filter'

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