An Algol 68 particular program consists on an enclosed clause in
a strong context with target mode void, possibly preceded
by a set of zero or more labels. For example:
hello:
begin puts ("Hello, world!'n")
end
Note that the enclosed clause conforming the particular program doesn’t have to be a closed clause. Consider for example the following program, that prints out its command line arguments:
for i to argc do puts (argv (i) + "'n") od