@@ -16,6 +16,9 @@
#
# Usage: checksum.py (options) [file path 1]...[file path n]
+# `file path` should be defined as a path to a font file for all use cases except with use of -c/--check.
+# With the -c/--check option, use one or more file paths to checksum files
+#
# Options:
# -h, --help Help
# -t, --ttx Calculate SHA1 hash values from ttx dump of XML (default = font binary)