diff --git a/spe3/SPE3CASE1.DATA b/spe3/SPE3CASE1.DATA
index 0e02ca3..f1b26f6 100644
--- a/spe3/SPE3CASE1.DATA
+++ b/spe3/SPE3CASE1.DATA
@@ -56,6 +56,14 @@ EQLDIMS
 UNIFOUT
 
 GRID
+
+-- The INIT keyword is used to request an .INIT file. The .INIT file
+-- is written before the simulation actually starts, and contains grid
+-- properties and saturation tables as inferred from the input
+-- deck. There are no other keywords which can be used to configure
+-- exactly what is written to the .INIT file.
+INIT
+
 -- ---------------------------------------------------------------
 -- The values in this section are retrieved from table 2 
 -- and figure 1 in Kenyon & Behie