glVertexAttribPointer() assumes non-default VAO

The following text is misleading, because it assumes non-default VAO is bound, and makes it impossible to figure out how to use client side data (compatibility profile).

If pointer is not NULL, a non-zero named buffer object must be bound to the GL_ARRAY_BUFFER target (see glBindBuffer), otherwise an error is generated. pointer is treated as a byte offset into the buffer object's data store. The buffer object binding (GL_ARRAY_BUFFER_BINDING) is saved as generic vertex attribute array state (GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING) for index index.

I understand that this is only for legacy use, but IMHO also the compatibility profile should be covered by the reference pages.

Even the specification itself is a bit confusing, because it gives impression that using null pointer is somehow allowed. I suppose null pointer is allowed only so that it is possible to restore default GL state (and to make the default GL state "valid", even though you cannot use the null pointer).

Start with the glVertexAttribPointer reference-page text quoted in the issue and compare it with the OpenGL specification's compatibility-profile behavior. Clarify how client-side pointers and null pointers should be described, and consider the work done when the reference page no longer implies that a non-default VAO is required.