Library /sys$common/syshlp/basichelp.hlb Compile time errors, JMPUNRLIN  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  ERROR - A RESUME,  GOSUB,  or  GOTO  statement  attempts  to  transfer
  control to a CASE statement.  Label or number the SELECT statement and
  transfer control to the beginning of the SELECT-CASE block.