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

@@ -279,18 +279,18 @@ possible values or a numeric range.
             magnetic field component is obtained by a divergence-free
             extrapolation.
 
-        -   `O`: outflow -- fluid is allowed to flow outwards through
+        -   `O`: outflow - fluid is allowed to flow outwards through
             the corresponding domain boundary but not to flow inwards.
             For the perpendicular velocity component this means
             $u_o=\mp\operatorname{sgn}u_i\cdot u_i$ where the
             '+'('-')-sign is valid for a lower (upper) domain boundary.
             Other variables are set likewise to inflow I.
 
-        -   `M`: mirror symmetry -- reflecting conditions, $u_o=-u_i$,
+        -   `M`: mirror symmetry - reflecting conditions, $u_o=-u_i$,
             for the perpendicular components of velocity and magnetic
             field. Zero derivative for the other variables.
 
-        -   `A`: anti-mirror symmetry -- same as M for non-magnetic
+        -   `A`: anti-mirror symmetry - same as M for non-magnetic
             variables. The magnetic field is forced to have dipole
             parity with respect to the domain boundary. This means
             $u_o=-u_i$ for the parallel magnetic field components and
@@ -299,26 +299,26 @@ possible values or a numeric range.
         -   `R`: reflection-on-axis (only of relevance in cylindrical
             geometry at the $y$-lower boundary at $R=0$ or in
             spherical geometry at the $y$-lower/upper boundaries at
-            $\theta =0,\pi$) -- reflecting conditions at the geometric
+            $\theta =0,\pi$) - reflecting conditions at the geometric
             axis. Same as M except for the azimutal magnetic field
             component for which $u_o=-u_i$.
 
         -   `C`: reflection-at-center (only of relevance in spherical
-            geometry at the $x$-lower boundary at $r=0$) -- reflecting
+            geometry at the $x$-lower boundary at $r=0$) - reflecting
             conditions at the coordinate center. Same as M except for
             the non-radial magnetic field components for which
             $u_o=-u_i$.
 
-        -   `P`: periodicity -- periodic conditions for all variables.
+        -   `P`: periodicity - periodic conditions for all variables.
 
-        -   `D`: default -- zero derivative in the non-magnetic
+        -   `D`: default - zero derivative in the non-magnetic
             variables and perpendicular-to-boundary condition
             (pseudo-vacuum condition) for the magnetic field.
 
         -   `F`: free boundary (only of relevance in cylindrical
             geometry at the $y$-lower boundary at $R=0$ or in
             spherical geometry at the $y$-lower/upper boundaries at
-            $\theta =0,\pi$ and $x$-lower boundary at $r=0$) --
+            $\theta =0,\pi$ and $x$-lower boundary at $r=0$) -
             'natural' boundary condition at the geometric axis. Boundary
             values are not set explictely but are implicitly given by
             $\pi$-shifted values. Note that when a `F`-type boundary