Differentiate touch and truncate

README.md

@@ -502,9 +502,9 @@ $ count ~/Pictures/*.jpg
 64
 ```
 
-## Create an empty file
+## Create or truncate a file
 
-Alternative to `touch`.
+Alternative to `truncate -s0`.
 
 ```shell
 :>file
@@ -513,6 +513,17 @@ Alternative to `touch`.
 >file
 ```
 
+## Create or update modification time of a file
+
+Alternative to `touch`.
+
+```shell
+:>>file
+
+# OR (shellcheck warns for this)
+>>file
+```
+
 # FILE PATHS
 
 ## Get the directory name of a file path