| execGRASS | Run GRASS commands | 
| gmeta | Reads GRASS metadata from the current LOCATION | 
| initGRASS | Initiate GRASS session | 
| readRAST | Read and write GRASS 7 raster files | 
| readVECT | Read and write GRASS 7 vector object files | 
| rgrass | Interface between GRASS geographical information system and R | 
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