docs

doc/api/hooks_server-side.md

@@ -661,6 +661,24 @@ function _analyzeLine(alineAttrs, apool) {
 }
 ```
 
+## exportHTMLAdditionalContent 
+Called from: src/node/utils/ExportHtml.js
+
+Things in context:
+
+1. padId
+
+This hook will allow a plug-in developer to include additional HTML content in the Body of the exported HTML
+
+Example:
+```
+exports.exportHTMLAdditionalContent = async (hookName, context) => {
+  let padId = context;
+  return "I am groot in " + padId;
+}
+
+```
+
 ## stylesForExport
 Called from: src/node/utils/ExportHtml.js