'
'Find all the labels and their references
'
'Examples of labels
:foo
:namespace~foo
:.local
:@
'
'Test sends
#send foo
#send self:foo
#self:foo
#@b
#.local
#foo.local
'
'Test conditional sends
#if blocked n #send foo
#if blocked s #foo
#if blocked e send foo
#if blocked w foo