# Table: gui
Table containing functions for modifying the menu GUI.
## Functions (6)
### `get_tab(tab_name)`
- **Parameters:**
- `tab_name` (string): Name of the tab to get.
- **Returns:**
- `tab`: A tab instance which corresponds to the tab in the GUI.
**Example Usage:**
```lua
tab = gui.get_tab(tab_name)
```
### `add_tab(tab_name)`
- `tab_name` (string): Name of the tab to add.
- `tab`: A tab instance which corresponds to the new tab in the GUI.
tab = gui.add_tab(tab_name)
### `show_message(title, message)`
Shows a message to the user with the given title and message.
- `title` (string)
- `message` (string)
gui.show_message(title, message)
### `show_warning(title, message)`
Shows a warning to the user with the given title and message.
gui.show_warning(title, message)
### `show_error(title, message)`
Shows an error to the user with the given title and message.
gui.show_error(title, message)
### `is_open()`
- `bool`: Returns true if the GUI is open.
bool = gui.is_open()