3-NIRVANA-user-guide/3.2-User-interfaces.md

@@ -511,7 +511,7 @@ possible values or a numeric range.
             Coupling to MHD integrator is via Strang-type splitting.
 
     -   `_C.viscosity_courant`: CFL-like number in the fluid viscosity
-        timestep. A typical value in case of STD is $<0.5$. Values much
+        timestep. A typical value in case of STD is $<0.4$. Values much
         larger than 1 are possible in the case of RKL.
 
 -   `03` (`_C.diffusion_solver`, `_C.diffusion_courant`)
@@ -578,7 +578,7 @@ possible values or a numeric range.
         solved.
 
     -   `_C.permeability_rel`: relative magnetic permeability $\mu_{rel}$ 
-        ($=\mu/\mu_0,\,\mu_0=4\pi\cdot10^{-7}\mathtt{V}\cdot\mathtt{m}^{-1}\cdot\mathtt{A}^{-1}\cdot\mathtt{s}^{-1}$).
+        ($=\mu/\mu_0$,$\mu_0=4\pi\cdot10^{-7}\mathtt{V}\cdot\mathtt{m}^{-1}\cdot\mathtt{A}^{-1}\cdot\mathtt{s}^{-1}$).
 
         **Important:** The Gaussian unit system can be mimicked by
         choosing a value ${\tt \_C.permeability\_rel}=10^7$ so that