content updates

doc_tables.md

@@ -1,9 +1,10 @@
 ---
 title: Tables
 tags: [formatting]
-keywords:
+keywords: datatables, tables, grids, markdown, multimarkdown, jquery plugins
+last_updated: August 12, 2015
 datatable: true
-summary: 
+summary: "You can format tables using either multimarkdown syntax or HTML. You can also use jQuery datatables (a plugin) if you need more robust tables."
 ---
 {% include linkrefs.html %}