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<concept xml:lang="en" id="GUID-47A4949C-61B3-5B91-9845-F40A9BC157C4"><title>File interface</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>The <xref href="GUID-BE0804F6-4375-3C8A-8C83-968F510466E0.dita"><apiname>RFile</apiname></xref> class represents an individual file and provides functions required to open, create or replace a file given its name, or to open a temporary file. </p> <p>Various <codeph>Write()</codeph> functions write data from a binary descriptor, and <codeph>Read()</codeph> functions read data into a binary descriptor. These functions provide a binary, stream-mode, interface. They are available in synchronous or asynchronous forms. </p> <p>The <xref href="GUID-95310602-EA12-3AEE-BDBD-F750FC17CAC4.dita"><apiname>TFileText</apiname></xref> class provides a record-based text interface which deals with the details of character-to-byte conversion. </p> <p>Files may be opened exclusively or shared, and for shared files, a region may be locked. </p> <p>A file's attributes and directory entry values may be changed while the file is open. The file may also be renamed while it is open. </p> </conbody></concept>