# PetscObjectSetTabLevel
Sets the number of tabs that `PETSCVIEWERASCII` output for that object uses 
## Synopsis
```
#include "petscsys.h"    
PetscErrorCode PetscObjectSetTabLevel(PetscObject obj, PetscInt tab)
```
Not Collective


## Input Parameters

- ***obj -*** any PETSc object, for example a `Vec`, `Mat` or `KSP`. Thus must be
cast with a (`PetscObject`), for example,
`PetscObjectSetTabLevel`((`PetscObject`)mat,tab;
- ***tab -*** the number of tabs





## Notes
this is used to manage the output from options that are embedded in other objects. For example
the `KSP` object inside a `SNES` object. By indenting each lower level further the hierarchy of objects
is very clear.

`PetscObjectIncrementTabLevel()` is the preferred API


## See Also
 `PetscObjectIncrementTabLevel()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/objects/gcomm.c.html#PetscObjectSetTabLevel">src/sys/objects/gcomm.c</A>


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