STAAD.Pro RC Designer Input / Analysis File Extension -reg.

Dear Colleagues,

If i need to send someone a STAAD file along with batch mode analysis / design results, i can send them .STD and .ANL files.

Now that i'm using brief mode for design (using inbuilt RC Designer), when transferring the files to someone, which file of RC Designer do I have to send in addition to the .STD and .ANL files? (so that the other user doesn't have to re-create all the design parameters.... and also to maintain 'sync').

Please advice. Thanks in Advance.