/usr/share/tkgate/images/bigleftarrow.b is in tkgate-data 2.0~b10-4.
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 bigleftarrow_width 16
#define bigleftarrow_height 16
static unsigned char bigleftarrow_bits[] = {
0x00, 0x00, 0x00, 0x01, 0x80, 0x01, 0xc0, 0x01, 0xe0, 0x01, 0xf0, 0x7f,
0xf8, 0x7f, 0xfc, 0x7f, 0xfe, 0x7f, 0xfc, 0x7f, 0xf8, 0x7f, 0xf0, 0x7f,
0xe0, 0x01, 0xc0, 0x01, 0x80, 0x01, 0x00, 0x01};
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