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

@@ -180,7 +180,7 @@ equations are integrated is a set of (logically) rectangular grid blocks
 different resolution. These superblocks are organized in a system of
 linked lists. The system of linked lists representing the full mesh has
 a master mesh pointer, `gm`. Technically, `gm` is a doubly pointer of
-struct type `GRD`, i.e. `*GRD`. The `GRD` struct type is declared in the
+struct type `GRD`, i.e. `**GRD`. The `GRD` struct type is declared in the
 header file `nirvana.h` and contains all grid information (attributes,
 coordinates, variables arrays, etc.). Dereferencing `gm` to `gm[l]`,
 gives the first superblock in a linked list collecting all superblocks
@@ -222,7 +222,7 @@ the workload balancer is regular block decomposition (cf. [Workload
 balancing](#workload-balancing)).
 
 **Note:** In addition to the mesh master pointer `gm`, there exists a
-dual master mesh pointer, `_G0`, of same type `*GRD`. `_G0` likewise
+dual master mesh pointer, `_G0`, of same type `**GRD`. `_G0` likewise
 represents the full grid hierarchy but in terms of its basic
 constituents: generic grid block units of fixed size ($4^3$ cubes in 3D,
 $4^2$ squares in 2D). In consequence, the `_G0` mesh resembles an