VMS Help MACRO, /MIGRATION, Compiler Directives, .BRANCH UNLIKELY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Instructs the compiler that the following branch will likely
    not be taken. Therefore, the compiler generates code that
    incorporates that assumption.

    Format

      .BRANCH_UNLIKELY

    There are no parameters for this directive.

  Additional Information (explode) :

• Description
• Example