Overview
SiSU (SiSU information structuring universe or Structured information, serialized units), is a Unix command line-oriented framework for document structuring, publishing and search.
Usage
Using markup applied to a document, or a collection of documents, SiSU can produce plain text, HTML, XHTML, EPUB, XML, OpenDocument, LaTeX or PDF files, and populate an SQL database.
Document structuring
SiSU offers its user a way to structure plain text and to add graphics, hyperlinks, endnotes, footnotes etc. with simple text editing programs such as Notepad (Windows), TextEdit (Mac) or Gedit (Linux). The lightweight markup language is mnemonic and human readable.
To process the marked up document(s) with SiSU, the user issues a command via the command-line of the computer terminal. The output can be generated in multiple formats (html, pdf, epub, and others) with one single command.
From Wikipedia (CC BY-SA 4.0).