v hello$ ls
{Hello World!}
p hello$
v a# @ 1
v b# @ 2
v c# @ b#
v d# - a# b#
v e# + a# c#
v sp1$ space 1
p; d=
p; d#
p; sp1$
p; e=
p e#
p; d+e=
v f# + d# e#
p f#
















