This dialog allows you to customize the User Interface. It can be invoked from Tools->Customize menu.
In "Tools" tab you define custom tool menu items:
You can launch executable files (.exe), script files (.js, .vbs), web pages (.html) and any other registered file types from the tools menu. In order to add a new tool you should open this dialog and click "New" button. Then enter the tool name, command (by hand or using file dialog) optional arguments and initial directory. If you check "Prompt for arguments" checkbox AmiBroker will ask for program's arguments each time
Other tabs provide UI customization features described in Customize UI tutorial section.