I need to know some of your experience with usage of below
- developing custom record function
- developing query function for a custom property (when is the need of developing a custom property Any examples.)
- developing logical name function (when is the need of having such functions)

I am new to WR but I am trying to find about the above as I have started scripting for my web app that is releases quarterely and has many changes.
Thanks in advance.....I hope your share of experience will be great help. The Mercury examples are there but a practical one will give a better understanding