/* A copy of the global Vbuffer_list, to maintain a per-frame buffer
ordering. The Vbuffer_list variable and the buffer_list slot of each
frame contain exactly the same data, just in different orders. */
/* A copy of the global Vbuffer_list, to maintain a per-frame buffer
ordering. The Vbuffer_list variable and the buffer_list slot of each
frame contain exactly the same data, just in different orders. */