interface_build {
    	{r.le.trace} 0
    	{Displays boundaries of patches, show how boundaries are traced, & displays information about patches.}
    	{entry map {Input raster map to be analyzed:} 0 raster}
    	{entry out {Output file to store patch data:} 0 file}
	{separator grey 1}
    	{checkbox -n {Output map 'num' with patch numbers} "" -n} 
    	{checkbox -p{Include sampling area boundary as perimeter} "" -p} 
    	{checkbox -t {Use 4 neighbor tracing instead of 8 neighbor} "" -t}  
}