The abs function returns the absolute value (makes the sign positive) of the number passed to it.

The address property returns the URL to the TileStack website.

The annuity function is used to compute the present or future value of an ordinary annuity. Rate is the interest rate per period, and periods is the number of periods over which the value is calculated. The formula for annuity is: annuity (rate, periods) = (1 - (1+rate) periods) / rate The annuity function is more accurate than computing the formula above using basic arithmetic operations and exponentiation, especially when rate is small.

The answer command displays a dialog box containing the result of an expression. While its not yet implemented, you can also display a question and up to three response buttons, each representing a different possible reply. Additionally, and once again not yet implemented, you can use answer file to prompt the user for a file from their computer, optionally providing an extra parameter "of type" to filter their choices to a certain file type.

The arrowKey command takes you to another tile. Pressing the left arrow key on your keyboard will take you to the previous tile and the right arrow key will take you to the next tile. Pressing up and down will take you to the most recent and least recent tiles, respectively. You can also hold down the shift key and press the left and right arrow keys to go to the first and last tiles in a stack. However, in addition to being able to call the arrowKey command within your scripts, you can also override arrowKey to do all sorts of neat things.

The ask command displays a dialog box containing a question with a text box into which the user can type an answer. You can also choose to populate the text area with a defaultAnswer.

The atan function returns the trigonometric arc tangent (inverse tangent) of the number passed to it; that is, the angle whose tangent is equal to the given value. The result is expressed in radians. Radians can be converted to degrees by multiplying by 180 and dividing the result by the value of the constant pi.

You use the autoHilite property to determine or change whether the specified button's hilite property is affected when the button is pressed (that is, when the mouse button is held down while the mouse location is within the button rectablge.) The default value of autoHilite is false.

When autoHilite is true, pressing the button sets the button's hilite property to true, and releasing the buttons sets its hilite property to false. The effect is that the button is momentarily highlighted (displayed in inverse or different color) when the user clicks it, giving visual feedback for the click action. The mouseDown message is sent to the button when the mouse is down and the mouseUp message is sent when the mouse is up.

The autoSelect property sets or returns whether lines in a locked field highlight automatically in response to a mouseDown event and to dragging or shit-clicking (Such fields are called list fields). Automatic highlighting occurs if autoSelect, lockText, multipleLines and dontWrap are all set to true. AutoSelect is set to false when dontWrap is set to false; dontWrap is set to true when autoSelect is set to true. To learn which lines are selected, get the selectedLine of field.

You use the autoTab property to determine or change whether the specified nonscrolling field will send the tabKey message to the current tile. When the autoTab property is true, pressing Return with the insertion point in the last line of that field movies the insertion point to the next field on that tile.

The normal tabbing order for fields is as follows: if the field you are leaving is a tile, the insertion point moves to the next higher-numbered tile field or the lowest-numbered background field if no higher-numbered tile field exists; if the field you are leaving is a background field if, the insertion point moves to the next higher-numbered background field or to the lowest numbered card field if no higher-numbered background field exists.