Speed tradeoff for when to show a preview of text file contents in the file's icon. If set to "always" then always show previews, even if the folder is on a remote server. If set to "local_only" then only show previews for local file systems. If set to "never" then never bother to read preview data.
Trédọ́ọ̀fụ̀ ngwangwa maka mgbe a ga elebiritụanya na ndịna faịlụ ngwe mgbe na aịkọn faịlụ. Ọ bụrụ na a haziri ya na "mgbe obụla" ya bụ gosi nlebiritụanya mgbe ọbụla, ọbụrụgodi na nsomebefaịlụ ahụ nọ na rìmóòtù sava. Ọ bụrụ na a haziri ya na "nkeụlọ_sọsọ" ya bụ kpọọ sọsọ nlebiritụanya na faịlụ sistem nkeụlọ. Ọ bụrụ na a haziri ya na "ọgaghị" ya bụ na enyekwala onwe gị nsogbu n'iwepụtaozi nlebiritụanya nke data.