diff --git a/docs/dcu-tableviewer.md b/docs/dcu-tableviewer.md
index 95b4294..1059fca 100644
--- a/docs/dcu-tableviewer.md
+++ b/docs/dcu-tableviewer.md
@@ -49,7 +49,9 @@ The Download button gives several options for obtaining the current view of data
 
 Note - if the table is registered in Data Controller as being TXTEMPORAL (SCD2) then the download option will prefilter for the _current_ records and removes the valid from / valid to variables.  This makes the CSV suitable for DC file upload, if desired.
 
-Note that all the above items are exported from backend.  There is also a _frontend_ context menu that can be used in the VIEW screen (right click menu) for quick export into CSV or Excel formats.   
+Note that all the above items are exported from backend.  There is also a _frontend_ context menu that can be used in the VIEW screen (right click menu) for quick export into CSV, Excel and PDF formats.  These frontend exports are "what you see": they cover the grid as it is displayed (the current selection if you have one, otherwise the whole table, with hidden columns omitted), so they honour your on-screen filters and labels but are not a substitute for the backend download when you need the full table.
+
+The PDF option produces a paginated A4 landscape document with the column headers repeated on every page.  It is limited to the first 5,000 rows, uses a monospace font, and covers Western European characters only - anything outside that character set is shown as `?`.  For a typeset report with your company branding, use the backend download instead.
 
 ### Web Query URL