:orphan:
# PetscViewerASCIISubtractTab
Subtracts from the number of times a `PETSCVIEWERASCII` viewer tabs before printing 
## Synopsis
```
#include "petscviewer.h" 
PetscErrorCode PetscViewerASCIISubtractTab(PetscViewer viewer, PetscInt tabs)
```
Not Collective, but only first processor in set has any effect; No Fortran Support


## Input Parameters

- ***viewer -*** obtained with `PetscViewerASCIIOpen()`
- ***tabs -*** number of tabs





## Note
`PetscViewerASCIIPushTab()` and `PetscViewerASCIIPopTab()` are the preferred usage


## See Also
 [](sec_viewers), `PETSCVIEWERASCII`, `PetscPrintf()`, `PetscSynchronizedPrintf()`, `PetscViewerASCIIPrintf()`,
`PetscViewerASCIIPopTab()`, `PetscViewerASCIISynchronizedPrintf()`, `PetscViewerASCIIOpen()`,
`PetscViewerCreate()`, `PetscViewerDestroy()`, `PetscViewerSetType()`, `PetscViewerASCIIGetPointer()`,
`PetscViewerASCIIPushTab()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/impls/ascii/filev.c.html#PetscViewerASCIISubtractTab">src/sys/classes/viewer/impls/ascii/filev.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex6.c.html">src/snes/tutorials/ex6.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/viewer/impls/ascii/filev.c)


[Index of all Viewer routines](index.md)  
[Table of Contents for all manual pages](/manualpages/index.md)  
[Index of all manual pages](/manualpages/singleindex.md)