Custom Reports

I am preparing a custom report and am have some problem finding XML code for the following.  I have searched this forum and also have downloaded the XML sheet.

1. Gravity after primary fermentation
2. Gravity after secondary fermentation
3. Measured bottling volume

Can anyone help with the code I should be using
Cheers
Jim 8)

I think these are the right ones to use:
[list type=decimal]
[*]OG_PRIMARY
[*]OG_SECONDARY
[*]FINAL_VOL_MEASURED
[/list]

What's this xml code stuff? Can the parameters from Beersmith be extracted?