Constants -- Predefined Constants
FILE_DEFAULT_READSIZE
The default number of bytes to read from a file.
FILE_MODE_READ
Read-only mode for opened files
FILE_MODE_WRITE
Using this mode, opened files will be truncated first and then new data
will be written to them.
FILE_MODE_APPEND
Using this mode, new data will be appended to the end of opened files.
FILE_LOCK_SHARED
Shared (read) locking mode
FILE_LOCK_EXCLUSIVE
Exclusive (write) locking mode