Add ractool comment that "1M" means 1 mebibyte
diff --git a/cmd/ractool/data.go b/cmd/ractool/data.go
index f87981b..6dcf40b 100644
--- a/cmd/ractool/data.go
+++ b/cmd/ractool/data.go
@@ -54,7 +54,8 @@
to Go slice syntax. A "400:" flag value would mean ranging from 400 (inclusive)
to the end of the decompressed file.
-The "256k" flag value means 256 kibibytes (262144 bytes).
+The "256k" flag value means 256 kibibytes (262144 bytes). Similarly, "1m" and
+"1M" both mean 1 mebibyte (1048576 bytes).
General Flags:
diff --git a/cmd/ractool/main.go b/cmd/ractool/main.go
index 20743ba..c20a92d 100644
--- a/cmd/ractool/main.go
+++ b/cmd/ractool/main.go
@@ -60,7 +60,8 @@
to Go slice syntax. A "400:" flag value would mean ranging from 400 (inclusive)
to the end of the decompressed file.
-The "256k" flag value means 256 kibibytes (262144 bytes).
+The "256k" flag value means 256 kibibytes (262144 bytes). Similarly, "1m" and
+"1M" both mean 1 mebibyte (1048576 bytes).
General Flags:
