#       Authenticode signature. 
      # 
      tcl load -findflags +TrustedOnly -loadflags +SetDllDirectory 
    } 
 
    if {$autoHook} then { 
    if {$autoHook && ![isPackageUnknownHandlerHooked]} then { 
      # 
      # NOTE: Install our [package unknown] handler and save the original 
      #       one for our use as well. 
      # 
      hookPackageUnknownHandler 
    } 
  } 
 
  proc isPackageUnknownHandlerHooked {} { 
    return [info exists [appendArgs \ 
        [getLookupVarNamePrefix] saved_package_unknown]] 
  } 
 
  proc hookPackageUnknownHandler {} { 
    set varName [appendArgs [getLookupVarNamePrefix] saved_package_unknown] 
 
    if {[info exists $varName]} then {