/usr/share/doc/axiom-doc/bitmaps/fi.bitmap is in axiom-hypertex-data 20170501-3.
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 fi_width 16
#define fi_height 16
static char fi_bits[] = {
0x00, 0x00, 0xc0, 0x01, 0xe0, 0x03, 0xb0, 0x01, 0x30, 0x00, 0x30, 0x60,
0x30, 0x20, 0xfc, 0x00, 0x18, 0x18, 0x18, 0x38, 0x18, 0x34, 0x18, 0x10,
0x18, 0x38, 0x1b, 0x28, 0x0f, 0x38, 0x07, 0x00};
|