Ruby File.open bağımsız olarak modları ve seçenekleri alır. Nerede modları ve seçenekleri tam bir liste bulabilirim?

Ruby IO module documentation, sanırım.

Mode |  Meaning
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"r"  |  Read-only, starts at beginning of file  (default mode).
----- --------------------------------------------------------
"r " |  Read-write, starts at beginning of file.
----- --------------------------------------------------------
"w"  |  Write-only, truncates existing file
     |  to zero length or creates a new file for writing.
----- --------------------------------------------------------
"w " |  Read-write, truncates existing file to zero length
     |  or creates a new file for reading and writing.
----- --------------------------------------------------------
"a"  |  Write-only, starts at end of file if file exists,
     |  otherwise creates a new file for writing.
----- --------------------------------------------------------
"a " |  Read-write, starts at end of file if file exists,
     |  otherwise creates a new file for reading and
     |  writing.
----- --------------------------------------------------------
 "b" |  Binary file mode (may appear with
     |  any of the key letters listed above).
     |  Suppresses EOL <-> CRLF conversion on Windows. And
     |  sets external encoding to ASCII-8BIT unless explicitly
     |  specified.
----- --------------------------------------------------------
 "t" |  Text file mode (may appear with
     |  any of the key letters listed above except "b").