# Changes: 2.1.2

```{rubric} General:
```

- Win32fe now takes --nt4 option for compatibility on NT4
- Supports cygwinpaths in win32fe
- Better support for borland tools
- Added PetscOptionsInsertString()
- Allow full path of debugger to be specified using
  -start_in_debugger option
- Better hyperlinks across documentation (including users manual)

```{rubric} ADIC:
```

- Support for global reductions on local functions
- Allow coloring of periodic grids

```{rubric} AO (Application Orderings):
```

```{rubric} TS (Timestepping Solvers):
```

```{rubric} DMMG:
```

```{rubric} SNES (Nonlinear Solvers):
```

- Removed all minimization support in PETSc. TAO package should be
  used for this functionality.

```{rubric} SLES (Linear Solvers):
```

```{rubric} KSP (Krylov Subspace Methods):
```

- Support -ksp_unpreconditioned_norm in -ksp_type cr

```{rubric} PC (Preconditioners):
```

- Added support for PCType PCMAT (PC based on a matvec)
- Added support for PCType PCHYPRE (includes PILUT, EUCLID, and
  BoomerAMG)
- Cholesky - additional info from factorization

```{rubric} MAT (Matrices):
```

- SBAIJ matmult - improve performance by optimizing communication.
- markdiagonal - performance optimization.
- SuperLU interface improved (check page 75 in the user's manual)
- DSCPACK interface inproved
- Spooles interface added

```{rubric} DA (Distributed Arrays):
```

```{rubric} VEC (Vectors):
```

```{rubric} IS (Index Sets):
```

```{rubric} Draw (Graphics):
```

- Added flag to support turning off axis resizing

```{rubric} Viewers:
```

- Allow drawing rectangles in postscript

```{rubric} System:
```

```{rubric} Error Handling:
```

```{rubric} Event Logging:
```

```{rubric} Fortran Interface:
```