/usr/share/themes/Bear2/openbox-3/max.xbm is in openbox 3.5.0-2ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 | #define max_width 8
#define max_height 8
static unsigned char max_bits[] = {
0xff, 0xff, 0x81, 0x81, 0x81, 0x81, 0x81, 0xff };
|