1 files changed, 5 insertions, 0 deletions
diff --git a/param.ccl b/param.ccl
index 736185d..a46a856 100644
--- a/param.ccl
+++ b/param.ccl
@@ -404,6 +404,11 @@ REAL GRHydro_rho_central "Central Density for Star"
 
 ##Parameters for the atmosphere.
 
+REAL tau_rel_min "A minimum relative tau (taumin = maxtau(t=0) * tau_rel_min) below which tau is reschaled"
+{
+  0: :: ""
+} 1.e-10
+
 REAL rho_abs_min "A minimum rho below which evolution is turned off (atmosphere). If negative, the relative minimum will be used instead."
 {
   -1.0: :: ""