Help for HotPaw Basic for iPhone/iOS version 1.5.5
  HotPaw Basic is a Classic BASIC language
  interpreter.  Line numbers are required to
  enter and edit programs.  You can edit
  a numbered line by using the "edit" command.
  (Please scroll this Help text to see more.)
  Type "help website" for more complete info.

Commands and Statement Keywords:
  run new  list del  save load removefile
  let  if then else endif   dim data read restore
  for to step next  while wend  goto gosub return
  ?  print  input  open close  end stop 
  def fn  mat  randomize  cls  : rem

Functions:
  int() abs() sgn()  rnd()
  sqr() exp() log() log10() sin() cos() tan() atn() 
  len() val() asc() str$() chr$() hex$() mid$() 
  ucase$() lcase$() right$() left$() field$() instr()
  eval() varptr() peek()  timer() date$ time$ pi

Operators:
  +  -  *  /  mod  ^
  =   <>  >  >=  <  <=   and  or  xor  not

Other special functions and commands:
  edit { line_number }
  dir
  removefile { filename$ }
  fn emailfile(address$, subject$, filename$)
  fn web(url$)
  fn vibrate()
  fn solve1()
  sound f,d,v : rem frequency, seconds duration, volume(0..99)
  morse m$    : rem plays morse code sounds 
  fn fontsize(x)	:' changes console font size

Graphics:
(This version limits graphics to the view above the keyboard.)
  moveto x,y
  lineto x,y    :' draws a line to x,y
  fn linewidth(w)
  graphics color r,g,b
  graphics fillrect x1,y1,x2,y2
  fn plot1()
  fn touch(1)	:' x location in graphics display
  fn touch(2)	:' y location in graphics display
  graphics cls  :' clears graphics display
  cls		:' clears both text and graphics

On iOS AirPrint enabled devices, you can print by using:
  open "lpt1:" for output as #1
  close #1 : rem print starts after file close

Hints, Notes and Limitations:

  String variable names must end with a
  $ character.

  Arrays must be dimensioned before use.

  Input is line input.  Only one variable
  is allowed per input statement.

  Function subroutines with return values are 
  not supported.

New commands:

    edit .

    :' Allows multi-line program editing.

    graphics circle r

    :' Draws circle at previous moveto location

New functions:

  dim a(8) :' create an array for GPS data
  fn location(1,a(0))
    :' Reads location in array a ( time, long, lat, alt, err )
    :' Returns time stamp (it's old data if unchanged)

  fn location(0)
    :' Stops GPS polling

  dim a(8) :' create an array for motion data
  fn accelerometer(1,a(0))
    :' Reads accelerometer into array a (time, x, y , z)
    :' Returns time stamp (it's old data if unchanged)

  fn accelerometer(0)
    :' Stops Accelerometer polling

  dim b%(65536) :' required array size
  fn recordaudio(64,b%(0))
    :' Continues filling array b% with audio samples.
    :' Returns index of latest sample

  fn recordaudio(0)
    :' Stops audio recording

Hints:

Use quotes around filenames with load/save.

If you quit without saving a modified program,
it's saved automatically in the file "tmp.bas". 
You can use fn emailfile() to email programs
and files to yourself to save them on your PC.

There are a few other, more advanced commands
documented on the HotPaw website:
 http://www.hotpaw.com/basic/iphone 
or type "help website" into the console.

1.5.5
	added functions for reading accelerometer and location
	added a function to read mic input into an array
	added a new edit mode
	added a graphics circle command
	fixed a matrix scaling bug
1.5.3
	added mat read command
	fixed mat command matrix multiply
	fixed a print tab() bug
1.5.2 
	fixed bug with printing the last line
	added fn getclipstr()
Version 1.5.1 - Universal/iPad iOS 4.2 version
Version 1.0.8(365b0i0) - original release
Copyright 2008,2010,2011 HotPaw Productions 
portions Copyright 1994,2000 Ronald H Nicholson Jr.
No warranty of functionality, fitness or
usefulness for any purpose whatsoever is
implied.
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