The -d35.9 debugging switch^[3] causes sendmail to print each macro as it is defined. The output looks like this:

^[3] There is no -d35.1 information.

define(name as "value") 

Here, the name is the macro's name, and the value is the value (text) assigned to the macro. If the macro already has a value assigned to it, sendmail prints:

redefine(name as "value")