Caiff plygellau dros y maint yma eu torri lawr i tua'r maint yma. Pwrpas hyn yw atal chwythu'r domen a lladd Nautilus ar blygellau enfawr. Bydd gwerth negyddol yn golygu nad oes terfyn. Amcangyfrif yw'r terfyn, am y caiff plygellau eu darllen darn wrth ddarn.
Folders over this size will be truncated to around this size. The purpose of this is to avoid unintentionally blowing the heap and killing Nautilus on massive folders. A negative value denotes no limit. The limit is approximate due to the reading of folders chunk-wise.