:orphan:
# DMMoabGetBoundaryMarkers
Return references to the vertices, faces, elements on the boundary 
## Synopsis
```
#include "petscdmmoab.h"   
PetscErrorCode DMMoabGetBoundaryMarkers(DM dm, const moab::Range **bdvtx, const moab::Range **bdelems, const moab::Range **bdfaces)
```

## Input Parameter

- ***dm -*** The DMMoab object



## Output Parameters

- ***bdvtx -*** Boundary vertices
- ***bdelems -*** Boundary elements
- ***bdfaces -*** Boundary faces





## See Also
 `DMMoabCheckBoundaryVertices()`, `DMMoabIsEntityOnBoundary()`

## Level
beginner

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/moab/dmmoab.cxx.html#DMMoabGetBoundaryMarkers">src/dm/impls/moab/dmmoab.cxx</A>


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[Index of all DMMOAB routines](index.md)  
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