2_HKI( 
"### Bridged Tee Attenuator\n" 
    3"___a___ is attenuation in dB<br>\n" 
    4"___Z<sub>in</sub>___ is desired input impedance in Ω<br>\n" 
    5"___Z<sub>out</sub>___ is desired output impedance in Ω<br>\n" 
    6"___Z<sub>0</sub> = Z<sub>in</sub> = Z<sub>out</sub>___\n" 
    8"___L = 10<sup>a/20</sup>___<br>\n" 
    9"___R1 = Z<sub>0</sub> · (L−1)___<br>\n" 
   10"___R2 = Z<sub>0</sub> / (L−1)___\n"