SYNOPSIS
  nomask string eff_perm (void | string domain, void | int | object skip)

DESCRIPTION
  Evaluate the current effective permission.
  If <domain> is set, the permission is computed in relation to the
  specified domain.
  <skip> denotes the object to start the evaluation with: either
  the object itself, or its place in the call chain. Default is
  the current object.

  The function scans back through the call stack and evaluates the lowest
  common denomitor of all permissions.

  Result is the permission string.

SEE ALSO
  security(C), check_permission(sefun), cmp_perm(sefun)
  get_permission(sefun), get_protection(sefun), prot2domain(sefun)
