What does have this to do with timing?

On the first run, use WRITEPROFILESTRING to write to the mot yet existing file. On every subsequent run, read from the already existing file with READPROFILESTRING.
code:
Pseudocode
:top
if exist($file)
readprofilestring()
;display the old stuff
endif

; do stuff

;write new stuff
writeprofilestring()
; wait 60 seconds
sleep 60
goto top

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There are two types of vessels, submarines and targets.