---
title: openStack
card_id: 23747
---

# openStack

```
openStack
```

Handler:

```
on openStack
  [ph:statements]
end openStack
```

HyperCard sends the `openStack` message when a user (or handler) goes to a card in a stack different from that of the most recent card.

Note: If you have more than one stack open at a time, HyperCard sends `resumeStack`, not `openStack`, when the stack becomes active. 

## Related Topics

* [closeStack](/HyperTalkReference/systemmessages/closeStack)
* [deleteStack](/HyperTalkReference/systemmessages/deleteStack)
* [Message sending orders](/HyperTalkReference/systemmessages/Message-sending-orders)
* [newStack](/HyperTalkReference/systemmessages/newStack)
* [resumeStack](/HyperTalkReference/systemmessages/resumeStack)
* [suspendStack](/HyperTalkReference/systemmessages/suspendStack)
* [Where messages are sent initially](/HyperTalkReference/systemmessages/Where-messages-are-sent-initially)