Function showTab

showTab(json?): void
Select a tab to display, either trips, routes, markers, tracks, tides, weather, info, or settings.
Parameters
- json: {
  ifMobile: boolean;
  tab: string;
  } = ...
  - ifMobile: boolean
    boolean: If true, show the tab on single column devices (generally, phones) (optional)
  - tab: string
    string: "trips | routes | markers | tracks | tides | weather | info | settings"
Returns void
Example
```
{
 "tab": "info",
 "ifMobile": true
}
```