The Identifier Dictionary is a great tool but it needs to 'learn' its stuff before it can help you. If you build a new Lazarus for example, the Dictionary is empty. I have in the past copied the the dictionary over from a previous Lazarus but looks like I did not write that little trick down, but its easy enough and a good idea.
For people like me who jump between different Lazarus versions, we could do with a "Lazarus Common", one place all versions look in for Dictionary and Help files perhaps ?
Davo