How do I add and remove tools from toolbars?

It's generic Eclipse. Window-> customize ....

--pa

Thanks for the response, Pavel. I have tried the Window->Perspective->Customize Perspective route but I don't get access to all the tools. The debug set has some "Reverse" debug items but not the normal resume, pause, step in, step over, etc. I did manage to get them on a Debug tab in the same window as the Project Explorer but not on the main tool bar. The main toolbar only has the reset and restart and instruction stepping mode debug buttons. I've started going through the Eclipse documentation but have not found anything useful yet. Any hints would be greatly appreciated. Thanks again.