To aid the reader's appreciation, here is a trivial Intercal program:
PLEASE NOTE THAT THIS MAY ONLY RUN ON C-INTERCAL
PLEASE DO ,1 <- #13
DO ,1 SUB #1 <- #584
DO ,1 SUB #2 <- #837
DO ,1 SUB #3 <- #1100
DO ,1 SUB #4 <- #1356
DO ,1 SUB #5 <- #1615
DO ,1 SUB #6 <- #1824
DO ,1 SUB #7 <- #2135
DO ,1 SUB #8 <- #2383
DO ,1 SUB #9 <- #2642
DO ,1 SUB #10 <- #2892
DO ,1 SUB #11 <- #3140
DO ,1 SUB #12 <- #3361
DO ,1 SUB #13 <- #266
PLEASE DO ,2 <- #1
PLEASE DO .5 <- #0
PLEASE DO .4 <- #1
PLEASE COME FROM (1)
DO .6 <- ",1 SUB .4"~#255
DO .6 <- !6~#15'$!6~#240'
DO .6 <- !6~#15'$!6~#240'
DO .6 <- !6~#15'$!6~#240'
DO .1 <- .5
DO .2 <- .6
PLEASE DO (1010) NEXT
DO .3 <- .3~#255
DO .5 <- .6
DO ,2 SUB #1 <- .3
PLEASE READ OUT ,2
(1) PLEASE DO .4 <- ",1 SUB .4"~#3840
PLEASE GIVE UP
--Clemens Meier
Uh, that's "Hello, World!"... so I'm told...