Bitmap ->
Arg A : Array : Integer : 2^8

When LooksLike( A, PNG_FILE ) then
Return Convert A, '?', BC_PNG

When LooksLike( A, GIF_FILE ) then
Return Convert A, '?', BC_GIF

When LooksLike( A, JPEG_FILE ) then
Return Convert A, '?', BC_JPEG

When LooksLike( A, BMP_FILE ) then
Return = A, '?'

When LooksLike( A, B64_FILE ) then
Return = <- A, STR_BASE64, BMP_FILE

Else
Exit ERR_FILE_FORMAT