Where I should put the CATCH sentence in a TRY...ENDTRY

Hi,

I need to catch some exceptions which appear when I do some file sentences like:

OPEN DATASET, CLOSE DATASET, TRANSFER, READ, DELETE

But my doubt is that: Should I put the sentence CATCH inmediatly after one of these sentences? or I can put this sentence in a random place of the TRY...ENDTRY block.

I ask this because I have a problem with some exception: DATASET_CAN_CLOSE and I put the CATCH at the end of the block TRY...ENDTRY, but the dump still appears.

Thanks for your time.

Best regards,

ADRIAN MEJIDO