Shortcut keys to show function parameters in Zend Eclipse for PHP Developers?

In Zend Eclipse for PHP Developers 3.2.0, is there any shortcut keys
that shows the arguments of the function where the cursor is placed?

For example, immediately after I finishing typing the function name and
hit enter, there will be a very nice hint tip of what the parameters of
the function are. Such as like this:

However, it easily goes away. What short cut keys should I use to get it
back? I remember there’s something I could use when the cursor is place
inside the parameters parenthesis. What is it?