Being able to embed assembly instructions directly in the code gave much needed access to all the PDP-10 byte manipulation instruction. I loved BLISS, but some had trouble with the pesky dots needed to indicate value of rather than addresses of variables.
Used it for a couple of years in the mid '70s before moving on to SAIL.
My first two programming jobs were in PDP-10/20 Assembly. Occasionally someone will complain about network specs that say octet instead of byte. And I‘ll just casually say, well some machines had variable byte sizes and go back to what I was doing, waiting for them to start sputtering.
Used it for a couple of years in the mid '70s before moving on to SAIL.