clarify what's 'on CPU'

Author: leofang

Diff for: src/array_api_stubs/_draft/creation_functions.py

@@ -230,8 +230,9 @@ def from_dlpack(
     device: Optional[device]
         device on which to place the created array. If ``device`` is ``None`` and ``x`` supports DLPack, the output array must be on the same device as ``x``. Default: ``None``.
 
-        The v2023.12 standard only mandates that a compliant library must offer a way for ``from_dlpack`` to create an array on CPU (using
-        a library-specific way to represent the CPU device (``kDLCPU`` in DLPack) e.g. a ``"CPU"`` string or a ``Device("CPU")`` object).
+        The v2023.12 standard only mandates that a compliant library must offer a way for ``from_dlpack`` to create an array
+        whose underlying memory is accessible to the Python interpreter (using a library-specific way to represent the CPU
+        device (``kDLCPU`` in DLPack) e.g. a ``"CPU"`` string or a ``Device("CPU")`` object).
         If the array library does not support the CPU device and needs to outsource to another (compliant) array library, it may do so
         with a clear user documentation and/or run-time warning. If a copy must be made to enable this, and ``copy`` is set to ``False``,
         the function must raise ``ValueError``.