Field Mapping To Templates

Field Mapping To Templates

*EDIT*  Problem solved:  %Subject%  not %subject%  I would still love to see a list of all fields because a lot of them are not that obvious.

Is there a way to map "Subject" from the Estimate to a custom template?

I'm using the "Custom Template" option and I don't see %subject% or anything like it as an option. I'm pretty sure that I'm seeing Subject on some of the pre-made templates so it seems like it should be there!

Is there a list of all available field names that can be mapped to a template?