I remember hacking the computed goto in the Fortran so
it would
execute my own entered assembler. That was fun. ;)
Interesting - it was a more normal hack to abuse the assigned goto -
in most implementations* the variable contents were just a genuine memory address
and you could drop code into a common block thus Bob's yer uncle.
* On the ICL1900 all assignable labels got small integers which were used as an
index lookup in an assigned goto thus that trick would not work.