1 files changed, 1 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 5dc054f..7854a06 100644
--- a/Makefile
+++ b/Makefile
@@ -4,6 +4,7 @@ INCLUDE = /include
 
 OPTIONS = 
 # PASSPHRASE_ECHO: Do not hide the passphrase
+# PASSPHRASE_STAR: Use '*' for each character instead of no echo
 
 OPTIMISE = -Os
 CPPFLAGS = $(foreach D, $(OPTIONS), -D'$(D)=1')