3-NIRVANA-user-guide/3.1-Code-basics.md

@@ -3,6 +3,9 @@
 CONTENTS:  
 [Functionality overview](3.1-Code-basics#functionality-overview)  
 [Dynamic arrays](3.1-Code-basics#dynamic-arrays)  
+[Mesh data structure](3.1-Code-basics#mesh-data-structure)  
+[Adaptive mesh refinement](3.1-Code-basics#adaptive-mesh-refinement)  
+[Parallelism and load balancing](3.1-Code-basics#parallelism-and-load-balancing)
 
 ## Functionality overview
 
@@ -377,7 +380,7 @@ lower cell node. Besides cell-nodal coordinates cell-centroid
 coordinates locating the center of cell volume and face-centroid
 coordinates locating the center of cell faces are of importance. Their
 definition for cylindrical- and spherical geometry is given in the table
-below where *Δ*  <sub>`i`*x*</sub> (*Δ*  <sub>`i`*y*</sub>) denotes the
+below where *Δ*<sub>`i`*x*</sub> (*Δ*  <sub>`i`*y*</sub>) denotes the
 difference of a quantity evaluated at `ix`+1 (`iy`+1) and `ix` (`iy`).
 Formal half-index subscripts mean that a quantity is to be evaluated at
 the geometric cell center. Corresponding coordinates are called