$ fq -d asn1_ber dv tc12.ber
   |00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f|0123456789abcdef|.{}: tc12.ber (asn1_ber) 0x0-0x3 (3)
0x0|09                                             |.               |  class: "universal" (0) 0x0-0x0.2 (0.2)
0x0|09                                             |.               |  form: "primitive" (0) 0x0.2-0x0.3 (0.1)
0x0|09                                             |.               |  tag: "real" (0x9) 0x0.3-0x1 (0.5)
0x0|   01                                          | .              |  length: 1 0x1-0x2 (1)
0x0|      49|                                      |  I|            |  binary_encoding: false 0x2-0x2.1 (0.1)
0x0|      49|                                      |  I|            |  decimal_encoding: true 0x2.1-0x2.2 (0.1)
0x0|      49|                                      |  I|            |  special: 9 0x2.2-0x3 (0.6)