For example: 

* <code>HKEY_CLASSES_ROOT\txtfile\shell\open\command</code>
* <code>HKEY_CLASSES_ROOT\txtfile\shell\print\command</code>
* <code>HKEY_CLASSES_ROOT\txtfile\shell\printto\command</code>

The values of the keys listed are commands that are executed when the handler opens the file extension.
Below is an instruction that describes a task, paired with an input that provides further context. Write a response that appropriately completes the request. ### Instruction: List the MITRE techniques contained in the text. ### Input: For example: 

* <code>HKEY_CLASSES_ROOT\txtfile\shell\open\command</code>
* <code>HKEY_CLASSES_ROOT\txtfile\shell\print\command</code>
* <code>HKEY_CLASSES_ROOT\txtfile\shell\printto\command</code>

The values of the keys listed are commands that are executed when the handler opens the file extension. ### Response: T1546.001.