add workflow diagrams

1 files changed, 21 insertions, 7 deletions

diff --git a/_conclusion.qmd b/_conclusion.qmd
index 052e07b..d34481b 100644
--- a/_conclusion.qmd
+++ b/_conclusion.qmd
@@ -13,20 +13,34 @@ Implement renderers that makes use of Markdown with embedded annotations.
 Beyond both authoring and rendering of annotations,
 several already emerging use cases may be aided by this work.
 
-### Rendering of annotations {#sec-rdf}
+### Further annotation processing {#sec-rdf}
 
 *FIXME: rewrite and reduce
 to describe concrete future works
-of rendering RDFa in HTML and XMP in PDF.*
+of extracting RDF and and rendering as RDFa and XMP.*
 
-* output format extension to generate PDF
-  * read semantic metadata from Pandoc YAML document header
+1. Restore non-annotated Markdown structure
+  * strip annotations from Markdown structure
+2. extract annotations as document-wide metadata
+  * extract annotations from Markdown structure
   * structure semantic metadata as RDF triples
-  * append RDF triples serialized as part of XMP metadata in PDF
-* output format extension to generate web page
+  * Markdown output: save RDF triples serialized as turtle
+    in YAML document header
+  * PDF output: embed RDF triples serialized as XMP
+    in document-wide XMP
+3. convert annotation to target-specific annotations
   * read semantic metadata from Pandoc YAML document header
   * structure semantic metadata as RDF triples
-  * append RDF triples serialized as RDFa
+  * Markdown output: preserve annotations,
+    and also save RDF triples serialized as turtle
+    in YAML document header
+  * HTML output: embed RDF triples serialized as RDFa
+    inline at text strings.
+  * PDF output: embed RDF triples serialized as XMP
+    inline at text strings.
+See @fig-phases
+
+![Implementation levels.](workflow/phases.svg){#fig-phases}
 
 Some document containers support metadata
 expressed in some serialization of the abstract language RDF,