1 files changed, 3 insertions, 4 deletions
diff --git a/param.ccl b/param.ccl
index 6fde64c..14270c5 100644
--- a/param.ccl
+++ b/param.ccl
@@ -58,11 +58,10 @@ KEYWORD out_style "Which style for 1D ASCII output"
   "xgraph"  :: "output readable by xgraph"
 } "xgraph"
 
-KEYWORD out_format "Which format for ASCII output" STEERABLE = ALWAYS
+STRING out_format "Which format for ASCII output" STEERABLE = ALWAYS
 {
-  "e" :: "output in exponential notation"
-  "f" :: "output in floating point notation"
-} "f"
+  "^(\.[0-9]{1,2})?[ef]$" :: "output with given precision in exponential / floating point notation"
+} ".13f"
 
 ############################
 # Specific to 1D output