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OPEN - a file I/O statement that enables I/O to a file or device
Syntax
  OPEN file [FOR mode] [ACCESS access] [lock] AS [#]filenum [LEN=reclen]
    ■ file is a string expression that specifies an optional device name,
      followed by a file name or path name
    ■ mode is one of the following keywords:
 
RANDOM   Read or write from a random- │ INPUT   Read only from sequential file
         access file (the default)    │ OUTPUT  Write to a sequential file
BINARY   Read or write from a binary  │ APPEND  Write to the end of a
         file                         │         sequential file
 
    ■ access and lock are ◄Details► used only in a networking environment
    ■ filenum is an integer expression whose value is between 1 and 255
    ■ reclen defaults to 128 for random-access files, to 512 for sequential
      files, and is not needed at all for binary files
See Also  ◄FREEFILE►
Other Uses of the OPEN Keyword
  OPEN mode,[#]filenum,file[,reclen] - an alternate syntax (see ◄Details►)
  ◄OPEN COM► - to open a communications channel