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

@@ -848,9 +848,9 @@ structure](3.1-Code-basics#mesh-data-structure).
 
 There are two types of mesh variables: cell-averaged variables and
 face-averaged variables. Cell-averaged variables are
-$\varrho,m_x,m_y,m_z,n_s,C_c$. It are described by cell-centroid
+$\varrho,m_x,m_y,m_z,\Phi,n_s,C_c$. It are represented by cell-centroid
 coordinates. Face-averaged variables are the magnetic field components
-$B_x,B_y,B_z$ (and testfields). It are described by cell face-centroid
+$B_x,B_y,B_z$ (and testfields). It are represented by cell face-centroid
 coordinates.
 
 Although a superblock `g` contains ghost cells (taking care of boundary
@@ -922,7 +922,7 @@ range $[0,1]$. The mesh of the superblock is indexed by
 **Important:** The species number densities must be consistently defined
 along with the mass density because of the conservation condition
 
-$$\sum_s(\mu_s+\mu_e q_s)n_s = \varrho/m_u,\quad s=0,{\tt \_C.species}-1$$
+$$\sum_s(\mu_s+\mu_e q_s)n_s = \varrho/m_u,\quad s=0,mathtt{_C.species}-1$$
 
 where $\mu_s$, $q_s$ and $\mu_\mathrm{e}$ are the molecular weight,
 charge of the s-th specie and the electron weight, respectively. In