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Annotation of 43BSDReno/contrib/isode-beta/doc/cn-isdn/figure2-1.pic, revision 1.1.1.1

1.1       root        1: .PS
                      2: boxwid =       2*boxwid
                      3: define boxit @
                      4:        box "$1" with .n at ($2.s.x, $2.s.y-lineht/2)
                      5:        arrow from last box.n to $2.s
                      6: @
                      7: ## Informal Comparison of the Protocol Stacks
                      8: B1:    box "APPLICATION"
                      9: B2:    boxit(PRESENTATION,B1)
                     10: B3:    boxit(SESSION,B2)
                     11: B4:    box "TRANSPORT" with .n at (B3.s.x, B3.s.y-lineht)
                     12:        arrow from B4.n to B3.s
                     13: B5:    boxit(NETWORK,B4)
                     14: B6:    boxit(DATA LINK,B5)
                     15: B7:    boxit(PHYSICAL,B6)
                     16: ##
                     17: B8:    box with .n at (B1.n.x+boxwid+linewid, B1.n.y) height (B1.n.y-B3.s.y) \
                     18:        "APPLICATION"
                     19: B9:    box "TRANSPORT" with .n at (B8.s.x, B4.n.y)
                     20:        arrow from B9.n to B8.s
                     21: B10:   boxit(NETWORK,B9)
                     22: B11:   boxit(DATA LINK,B10)
                     23: B12:   boxit(PHYSICAL,B11)
                     24: ##
                     25:        move to (B7.s.x, B7.s.y-lineht); "OSI stack"
                     26:        move to (B12.s.x, B12.s.y-lineht); "DDN stack"
                     27: ##
                     28: .PE

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