---
title: Constants
card_id: 91279
modified: yes
---

# Constants

### down

Equal to the literal `"down"`.

`if the mouse is down then exit repeat`

### empty

Equal to the literal `""` (the null string)

`if it is empty then exit askTheUser`

### false

The opposite of `true`; equal to the literal `"false"`

`if the hilite of button 1 is false then mark this card`

### formFeed

Equal to `numToChar(12)`, which starts a new page in some file formats.

`write formFeed to file "My Info"`

### lineFeed

Equal to `numToChar(10)`, which starts a new line in some file formats.

`write lineFeed to file "My Info"`

### pi

Equal to the mathematical value pi to 20 decimal places:

`3.14159265358979323846`

### quote

Equal to the double quotation mark character: `"`

`get "stack" && quote & "Home" & quote --it now contains the string: stack "Home" go it`

### return

Equal to `numToChar(13)`.

```
put return after field 1
write return & return to file "Data"
```

### space

Equal to `numToChar(32)` or the literal `" "`.

```
if theCharacter is space
then exit checkActiveText
```

### tab

Equal to `numToChar(9)`.

`write tab to file "My Info"`

### true

The opposite of `false`; equal to the literal `"true"`.

```
if the hilite of button 1 is true
then unmark this card
```

### up

Equal to the literal `"up"`.

`if the mouse is up then exit repeat`

### zero..ten

Equal to the numbers 0 through 10.

`go card one`

### comma

Equal to the character `","` (`numToChar = 44`)

`read from file "Data" until comma`

### colon

Equal to the character `":"` (`numToChar = 58`)

`set the itemDelimiter to colon`