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      Progn+touchable

      Execute some events with some additional fns and/or vars made temporarily touchable.

      Examples:
      (progn+touchable :all ; same as :fns :all :vars :all
        (defun foo ...)
        (defun bar ...))
      (progn+touchable :vars (current-package ld-skip-proofsp)
        ...)
      (progn+touchable :fns :all
        ...)
      (progn+touchable :fns set-w :vars :all
        ...)

      This is like progn except that it surrounds the events with code to add certain fns and/or vars to those that are temporarily touchable. Related to progn=touchable. An active ttag is required to use this form (See defttag) because it can render ACL2 unsound (See remove-untouchable). Note that the syntax for this macro is not quite like traditional keyword arguments, which would come at the end of the argument list.