Add usage page

za3k · Jun 1, 2021 · db4486d · db4486d
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diff --git a/USAGE.md b/USAGE.md
@@ -27,5 +27,6 @@ The QR codes can be read back with a scanner or webcam to re-create the original
 
 The QR mode is always binary with no QR compression.
 
-The output is named <FILE>.qr.pdf
+The output is named <FILE>.qr.pdf. You can also pipe stdout.
+```
 ```
diff --git a/qr-backup b/qr-backup
@@ -37,7 +37,7 @@ The QR codes can be read back with a scanner or webcam to re-create the original
 
 The QR mode is always binary with no QR compression.
 
-The output is named <FILE>.qr.pdf'''
+The output is named <FILE>.qr.pdf. You can also pipe stdout.'''
 
 L = qrcode.constants.ERROR_CORRECT_L
 M = qrcode.constants.ERROR_CORRECT_M # default, 25%