# Understanding commands

Commands are specified in the **command** parameter when calling the **main** servlet

```
https://acme.com/TempusServa/main?command=index
```

The core commands are

- index
- many (list)
- item (edit)
- new

View commands can also be used in [Integration/Content\_source](https://wiki.tsnocode.com/index.php?title=Integration/Content_source "Integration/Content source")