clarify display README

diff --git a/tests/README.md b/tests/README.md
index 3af08f7be0b4113b194cbaee388db77b45d170cf..442285dbc2a4de2650743de78e703c92c61f145a 100644 (file)
--- a/tests/README.md
+++ b/tests/README.md
@@ -122,7 +122,10 @@ Full list of arguments
     tries=    : Maximum number of random restarts on a single strategy before switching (Default 3)
                 Higher values will make optimizer run longer, more chances to find better solution.
     memLog    : Limits the log of the size of each memotable (1 per strategy). Setting memLog = 0 turns off memoization 
- --display=   : which params to display, uses all --zstd parameter names and 'cParams' to display only compression parameters. 
+ --display=   : specifiy which parameters are included in the output
+                can use all --zstd parameter names and 'cParams' as a shorthand for all parameters used in ZSTD_compressionParameters 
+                (Default: display all params available)
+
  -P#          : generated sample compressibility 
  -t#          : Caps runtime of operation in seconds (default : 99999 seconds (about 27 hours )) 
  -v           : Prints Benchmarking output