Make line spacing more pleasant
Fix spelling

ommission => omission
litteral => literal
wrds => words
Use the active, imperative voice consistenly

For example, "Compare...", not "Compares...".
Consistently refer to x registers as x(0), x(1), and so on
Consistenlty spell CP in upper case
Make indentation consistent
Clarify description of gc_bif's

Remove the statement that X(Live) and so on may be used for storing
arguments, since that is an implementation details in the run-time
system. Add a sentence that there may be a garbage collection,
preserving Live number of registers.
Clarify the description of the call instructions

Clarify that call/2 and call_ext/2 store the return address in
the CP register, and that the other instrutions don't update CP.

Use the same wording to describe call_only/2 and call_ext_only/2.
Remove incorrect assertion that test_heap/2 saves the CP
Correct description of init/1
Correct spelling of move instruction

Move => move
Clarify that call_fun/1 updates the CP register
Remove the note about the Edoc style comments

I (in my capacity as the maintainer of the compiler) will not allow
any known errors to be introduced into the descriptions of the
instructions.