Library /sys$common/syshlp/basichelp.hlb ON, ERROR, GOTO  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  The ON ERROR GOTO statement transfers program control to a specified
  line or label in the current program unit when an error occurs under
  certain conditions.

  Example

   5     ON ERROR GOTO 19000

  Additional Information (explode) :

• Syntax