/usr/lib/xpbs/bitmaps/maximize.bmp is in torque-client-x11 2.4.16+dfsg-1.3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 | #define maximize_width 16
#define maximize_height 16
static char maximize_bits[] = {
0x00, 0x00, 0x00, 0x00, 0xfc, 0x3f, 0x04, 0x20, 0x04, 0x20, 0x04, 0x20,
0x04, 0x20, 0x04, 0x20, 0x04, 0x20, 0x04, 0x20, 0x04, 0x20, 0x04, 0x20,
0x04, 0x20, 0xfc, 0x3f, 0x00, 0x00, 0x00, 0x00};
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