If C is your 'Do'. What note is the 'Fa'? *
h

Idont know what to do here

Net  the suffix is your .com/.net/.org, and so on, i believe

Fist of all, you need to learn about cad and architecture or basic engineering or architecture drawing in order to prorperly use and utilize cad programs.it's as abbreviated computer-aided-drafting. it will the user acquire skills faster since it's aided by technology