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

@@ -188,7 +188,7 @@ IC). Technically, `gm` is a doubly pointer of struct type `GRD`, i.e.
 `nirvana.h`. Dereferencing `gm` to `gm[l]` gives the first superblock in
 a linked list which collects all superblocks belonging to mesh
 refinement level *l*. `gm[l]`, like any grid block, is of `GRD` type,
-i.e., a pointer to struct `GRD`. The base level *l* = 0 starting with
+i.e., a pointer to struct `GRD`. The base level *l*=0 starting with
 pointer `gm[0]` is special because it spans the computational domain.
 The superblocks making up a refinement level *l* can be reached
 consecutively going through the corresponding linked list. Starting with
@@ -361,7 +361,7 @@ Elements V of struct `GRD`:
 | `dx`,`dy`,`dz`             | cell spacings                                                                                       |
 | `dxi`,`dyi`,`dzi`          | inverse of cell spacings                                                                            |
 | `nx`,`ny`,`nz`             | last grid cell index in a grid block                                                                |
-| `nx1`,`ny1`,`nz1`          | nx-1,ny-1,nz-1                                                                                      |
+| `nx1`,`ny1`,`nz1`          | `nx`-1,`ny`-1,`nz`-1                                                                                      |
 | `ixs`,`iys`,`izs`          | grid block starting index of active cells                                                           |
 | `ixe`,`iye`,`ize`          | grid block ending index of active cells                                                             |
 | `nbx`,`nby`,`nbz`          | superblock size in terms of generic block size minus 1                                              |