o open
c close
h high
l low
v volume

a[0] = 33 //set

a[0] //get

MA( Close, 10 );
 IIf( H > Ref(H,-1), MA(H,20), MA(C,20) );

relational ( <, >, <=, >= )
equality ( ==, != )

 bit-wise
| 
&
 
 
Logical operators:
NOT
AND
OR

i = j = k = 0

+
-
/
*
%
^
+=
-=
/=
*=
%=
^=
&=
|=

if ( CONDITION )
{

}

for( i = 0; i < 10; i++ )
{
}

typeof() operator

The typeof operator is used in the following way:
typeof (operand)
The typeof operator returns a string indicating the type of the *unevaluated* operand.

Possible return values are:

"undefined" - identifier is not defined

"number" - operand represents a number (scalar)

"array" - operand represents an array

"string" - operand represents a string

"function" - operand is a built-in function identifier

"user function" - operand is a user-defined function

"object" - operand represents COM object

"member" - operand represents member function or property of COM object

"handle" - operand represents Windows handle

"unknown" - type of operand is unknown (should not happen)typeof operator allows among other things to detect undefined variables in the following way

The unary operators (++ and --) are called “prefix” increment or decrement operators
++
--
[] array element operator

BarCount constant gives the number of bars in array (such as Close, High, Low, Open, Volume, etc). Array elements are numbered from 0 (zero) to BarCount-1. BarCount does NOT change as long as your formula continues execution, but it may change between executions when new bars are added, zoom factor is changed or symbol is changed.

my_var_name = Matrix( rows, cols, initvalue);

To access matrix elements, use:
my_var_name[ row ][ col ];

where
row is a row index (0... number of rows-1)
and
col is a column index (0... number of columns-1)

sqrt()
rsi( period )
macd()
ema( data , period )

dynamicrsi = IIf( Close > MA(C,10), RSI(9), RSI(14) );

result = RSI(14) > 70;

Filter = 1; // show all bars
//
m = MA( C, 10 );
cond = Cross( C, m );
bi = BarIndex();
//
AddColumn( C, "Close" );
AddColumn( m, "Mov Avg" );
AddColumn( cond, "Condition");
AddColumn( bi, "BarIndex" );
AddColumn( ValueWhen( cond, bi ), "ValueWhen( cond, BarIndex() )" );
AddColumn( ValueWhen( cond, Close), "ValueWhen( cond, Close )" )

/*
If you run above code you will clearly see how ValueWhen picks 
the value when condition is true and “holds” 
it for all other bars (when condition is false).
*/

 ValueWhen(EXPRESSION, ARRAY, n = 1) 

 AddColumn( array, name,
   	format = 1.2, textColor = colorDefault,
   	bkgndColor = colorDefault, width = -1,
   	barchart = Null ) 

Filter = 1; // show all bars

 LastValue(ARRAY, lastmode = True ) 

_TRACE ("MSG")

Buy
Sell

Short
Cover

buy - "true" or 1 value opens long trade
sell - "true" or 1 value closes long trade
short - "true" or 1 value opens short trade
cover - "true" or 1 value closes short trade

buyprice
sellprice
shortprice
coverprice

PositionSize = <size array>

Now you can control dollar amount or percentage of portfolio that is invested into the trade

    positive number define (dollar) amount that is invested into the trade for example:

    PositionSize = 1000; // invest $1000 in every trade

    negative numbers -100..-1 define percentage:
    -100 gives 100% of current portfolio size,
    -33 gives 33% of available equity for example:

    PositionSize = -50; /* always invest only half of the current equity */

    dynamic sizing example:

    PositionSize = - 100 + RSI();

    as RSI varies from 0..100 this will result in position depending on RSI values -> low values of RSI will result in higher percentage invested

 ApplyStop(
	type,
	mode,
	amount,
	exitatstop,
	volatile = False,
	ReEntryDelay = 0,
	ValidFrom = 0,
	ValidTo = -1 
) 



type =
0 = stopTypeLoss - maximum loss stop,
1 = stopTypeProfit - profit target stop,
2 = stopTypeTrailing - trailing stop,
3 = stopTypeNBar - N-bar stop 

mode =
0 - disable stop (stopModeDisable),
1 - amount in percent (stopModePercent), or number of bars for N-bar stop (stopModeBars),
2 - amount in points (stopModePoint);
3 - amount in percent of profit (risk)

amount =
percent/point loss/profit trigger/risk amount.
This could be a number (static stop level) or an array (dynamic stop level)

ExitAtStop

ExitAtStop = 0 - means check stops using only trade price and exit at regular trade price(1)
(if you are trading on close it means that only close price will be checked for exits and exit will be done at close price)
ExitAtStop = 1 - check High-Low prices and exit intraday on price equal to stop level on the same bar when stop was triggered
ExitAtStop = 2 - check High-Low prices but exit NEXT BAR on regular trade price.

Ref( Close, -1)

HHV(H,no);
LLV(L,no);

dayofweek()
month()

sign( Close - Ref( Close, -1 ) )