{* default values for the component - this also prevents errors about unassigned values required by the component *} {$tdata.data = $tdata.data ?? ['world'=>'not defined']} {$tdata.data.world = $tdata.data.world ?? 'not defined'} {$tdata.attr = $tdata.attr ?? 'This line is supposed to be set by the "attr" attribute but it was not defined in the call to the component. It is recommended to have default values set in the component in case values are not given'} {* end default values *}