### window

One of HyperCard’s built-in windows, the window containing the current stack (called the card window), or any other window containing a stack, as follows:

```
card window
tool window
window "tools"
pattern window
window "Patterns"
scroll window
window "scroll"
[the] message [window]
[the] message [box]
[the] msg [window]
[the] msg [box]
window "message"
message watcher
window "message watcher"
variable watcher
window "variable watcher"
window "Home"
window "Readymade Buttons"
-- if longWindowTitles is true:
window "My HD:Home"
window 6
window ID 21403082
```

Note: If a window containing a stack is inactive, you can set only its `location` and `visible` properties.

<b>Important</b>: External windows can’t be substituted for the `[ph:window]` placeholder (see the `[ph:externalWindow]` placeHolder).