docs

doc/api/hooks_server-side.md

@@ -245,7 +245,7 @@ Things in context:
 2. attribLine - line attributes
 3. text - line text
 
-This hook will allow a plug-in developer to re-write each line when exporting to HTML.
+This hook will allow a plug-in developer to re-write each line when exporting to HTML.  Note that you problably don't want to use this plugin and will probably get better results from `asyncLineHTMLForExport`
 
 Example:
 ```
@@ -271,6 +271,39 @@ function _analyzeLine(alineAttrs, apool) {
 }
 ```
 
+## asyncLineHTMLForExport
+Called from: src/node/utils/ExportHtml.js
+
+Things in context:
+
+1. The context of the line
+2. lineContents - The HTML of the line
+3. Attribute pool
+4. Attribute line
+5. Line Text
+
+This hook will allow functions to be returned to modify the HTML.
+
+Example: 
+
+```
+exports.asyncLineHTMLForExport = function (hook, context, cb) {
+  cb(rewriteLine);
+}
+
+function rewriteLine(context){
+  var lineContent = context.lineContent;
+  sizes.forEach(function(size){
+    size = size.replace("fs","");
+    if(lineContent){
+      lineContent = lineContent.replace("<fs"+size, "<span style='font-size:"+size+"px'");
+      lineContent = lineContent.replace("</fs"+size, "</span");
+    }
+  });
+  return lineContent;
+}
+```
+
 ## stylesForExport
 Called from: src/node/utils/ExportHtml.js