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SetTextBuf procedure
DECLARATION: SetTextBuf(var F : Text; var Buf [;Size : Word] );
PURPOSE: Assigns an I/O buffer to a text file
UNIT: System
REMARKS: F must be a Text file variable, Buf may be any variable, and
Size is an optional Word type parameter. Size may specify
the size of the desired buffer in bytes. If Size is omitted,
SizeOf(Buf) is assumed; that is, the entire memory region
occupied by Buf is used as a buffer.
NOTE: Calling SetTextBuf on an open file once I/O operations
have take place can cause data loss due to the change
of the buffer.
RESTRICTIONS: Must never be used on an open file, but may be called
immediately after a call to Append, ReSet or ReWrite.
DIFFERENCES: Alternative to 3.0's syntax: Var F : Text[2048];
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