1 files changed, 1 insertions(+), 0 deletions(-)

M usage.md

@@ 248,6 248,7 @@ Below are the following valid keywords
     <today_year>    : 4-digit year of today's date
     <today_mo>      : Month number of today's date
     <today_int>     : Today's date formatted as yymmdd (200101)
+    <rolling_twelve>: 12 months prior to the most recent close (YYYY-MM)
 
 ## Report specification