/usr/share/xcrysden/images/zoomup.xbm is in xcrysden-data 1.5.53-1.
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 zoomup_width 16
#define zoomup_height 16
static unsigned char zoomup_bits[] = {
0x00, 0x0e, 0x80, 0x3f, 0xc0, 0x60, 0x40, 0x44, 0x60, 0xc4, 0x60, 0xdf,
0x60, 0xc4, 0x40, 0x44, 0xc0, 0x60, 0xe0, 0x3f, 0x70, 0x0e, 0x38, 0x00,
0x1c, 0x00, 0x0f, 0x00, 0x06, 0x00, 0x04, 0x00};
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