How do the links work?

Currently, alfons works with at least one fixed link: All invoices, letters, notes, etc., are always based on a record entry, i.e., a person or company. (Future versions will optionally allow completely free creation of these records, independent of the record.) In addition, invoices can also be linked to items and projects, notes to projects, and letters to projects. Furthermore, you can link people to other people within the record to, for example, map business or personal relationships.