brainfuck++ Compiler/Language Specifications
By Jason Rush (AkSnowman) (updated by Jacob Torrey)

Syntax:
Beyond the original brainfuck commands, the following new commands are introduced.

#
when no file is opened:
Move X cells forward, read in filename until a null (0x00) byte is reached,
open file for reading/writing. Pointer is then returned to original cell
and original cell's value is replaced with 0x00 for success or 0xFF(-1) for
failure. No other cells/values are modified.
ex. [5][?][?][?][?]['t']['e']['s']['t']['.']['t']['x']['t'][0x00]
when a file is opened:
Closes opened file

:
Reads in 1 character/byte from File and advances File Pointer.
If EOF is reached, 0x00 is returned.

;
Writes value of current cell to File and advances File Pointer.

%
When no network connection is opened:
Move X cells forward, read in remote address (IP or domain) until a
null (0x00) byte is reached, then reads in 2 byte port
(ex port 10 = [0x00][0x0A]). A TCP connection is opened to requested
domain at requested port. Pointer is returned to original cell and
original cell's value is replaced with 0x00 for success or 0xFF(-1)
for failure. No other cells/values are modified.
when a network connection is opened:
Closes network connection

^
Sends value of current cell via the open network connection/socket.

!
Reads in 1 character/byte from network connection/socket.
If connection is closed by remote host, 0x00 is returned instead.

# implies only 1 file may be opened at any given time
: implies use of files with 0x00's will cause false EOF conditions
; lack of any sort of erroring (read-only files and such)
% implies only 1 network connection may be opened at any given time.
TCP is assumed.
^ implies use of 0x00's in transmissions will cause false EOT conditions
! lack of any sort of erroring or non-blocking support
presumably hangs or times out

brainfuck++ is also backwards compatable with brainfuck as long as one has no
brainfuck++ command characters in their brainfuck source
(other options depend on brainfuck and brainfuck++ compiler/interpreter arguments)

Compiler specific information:
8-bit bytes
1-byte cells
cells wrap
0xFF + 1 == 0x00
and
0x00 - 1 == 0xFF
array is 30,000 cells in length
loops on array "underflow/verflow" (moving left/down beyond 1st cell or up/right beyond last cell)
pointer starts at first cell
"read" commands (stdin, file, and network) take in newlines as recieved from the OS
ie. may be just 10, just 13, or 13 10 (CRLF)
0x00 shall be used for EOF's (and EOT)

All compiler specific information/specifications may be modified by arguments passed to compiler