./badbegin.svx:2:10: Matching BEGIN tag has no prefix
./badbegin.svx:5:11: Prefix tag doesn't match BEGIN
./badbegin.svx:7:5: warning: Closing prefix omitted from END

Removing trailing traverses...

Concatenating traverses...

Simplifying network...

Calculating network...

Calculating traverses...

Calculating trailing traverses...

Calculating statistics...

Survey contains 1 survey station, joined by 0 legs.
There are 0 loops.
Total length of survey legs =    0.00m (   0.00m adjusted)
Total plan length of survey legs =    0.00m
Total vertical length of survey legs =    0.00m
   1 0-node.
Done.
There were 1 warning(s) and 2 error(s) - no output files produced.