/;if (i==0)
    ;i = 2
;/

/:  import
    "this"
    "that"
:/

# ;; can be used as a quick block re-definition

/;if (i==0)
    ;i = 2
;;else
    ;i = 0
;/

# Comment block switching

/; if (i == 2)
    ;i = 4
;#
    Comment
#; else
    ;i = 6
;/