WHILE ~ WEND
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A `WHILE` block creates a loop that runs /while/ a condition is true. The condition is evaluated at each iteration, so if it changes to false, the loop will exit.
* Syntax
```sb4
WHILE condition
<body>
WEND
```
|* Name | Description |
| `WHILE` | The `WHILE` keyword is the start of a `WHILE` block. |
| `condition` | An expression that results in a true or false value. |
| `<body>` | Code within the `WHILE` block is executed at each iteration of the loop. |
| `WEND` | The `WEND` keyword is the end of a `WHILE` block. |
* Examples
The `WHILE` loop is used to repeat a block of code while some trivial condition remains true. The condition must have some way to change within the loop, otherwise the loop will continue forever (unless a statement within contains `BREAK` or some other means of escape.)
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