GNA format

The old text format used by the GNA tool.
state-variable: A
  zero-parameter: zero_A
  box-parameter: max_A
  threshold-parameters: t1_A
  synthesis-parameters: k1_A
  degradation-parameters: g_A
  state-equation:
    d/dt A = k1_A * s+(A,t1_A)
        - g_A * A
  parameter-inequalities:
    zero_A < t1_A < k1_A / g_A < max_A
state-variable: B
  zero-parameter: zero_B
  box-parameter: max_B
  threshold-parameters: t1_B
  synthesis-parameters: k1_B
  degradation-parameters: g_B
  state-equation:
    d/dt B = k1_B * s-(A,t1_A)
        - g_B * B
  parameter-inequalities:
    zero_B < t1_B < k1_B / g_B < max_B
state-variable: D
  zero-parameter: zero_D
  box-parameter: max_D
  threshold-parameters: t1_D
  synthesis-parameters: k1_D
  degradation-parameters: g_D
  state-equation:
    d/dt D = k1_D * s+(A,t1_A)
        - g_D * D
  parameter-inequalities:
    zero_D < t1_D < k1_D / g_D < max_D