0010 // This is a line comment.
0020 
0030 a_name'with←very[strange]characters\in£it
0040 // Are keywords and word operators at start of names safe?
0050 do'something
0060 and←then'something'different
0070 case[closed
0080 closed]it'is
0090 eod\really
0100 true£or'false
0110 false_and'true
0120 IF a AND then←some THEN NULL
0130 
0140 text$:="some text"; a:=42; b:=TRUE; c:=FALSE; full'circle:=2*PI
0150 address#:=$d020; mask#:=%00001111 // Hex & bin numbers.
0160 DIM field(-1:1,-1:1) // 3x3 array with 0,0 at the center.
0170 DIM buffer$ OF 1024,lines$(100) OF 80,xs(low:high)
0180 
0190 PRINT "She said ""Hello!"" to the world."
0200 PRINT "Embedding "18"byte values"146" into a string."
0210 PRINT "42";"";"Hallo";""0""
0220 
0230 // Short circuit operators OR ELSE and AND THEN contain keywords.
0240 IF a OR ELSE b AND THEN c THEN do'something
0250 
0260 // Optional keywords.
0270 EXEC some'procedure
0280 LET answer:=42
0290 
0300 FOR i:=0 TO 10
0310   PRINT "fib(",i,") =";fib(i)
0320 ENDFOR i
0330 
0340 RESTORE this'is'a'label
0350 WHILE NOT EOD
0360   READ language$,version
0370   PRINT language$;"version";version
0380 ENDWHILE
0390 
0400 t$=""
0410 REPEAT
0420   max'length:=LEN(t$)
0430   t$:+"x"
0440 UNTIL LEN(t$)=max'length
0450 PRINT "UnDIMed strings have a max length of";max'length
0460 
0470 PROC swap(REF a, REF b) CLOSED
0480   tmp:=a; a:=b; b:=tmp
0490 ENDPROC swap
0500 
0510 PROC shuffle(n, REF values()) CLOSED
0520   IMPORT swap
0530   FOR i:=n TO 1 STEP -1 DO swap(values(i), values(RND(1,i)))
0540 ENDPROC shuffle
0550 
0560 FUNC fib(n) CLOSED
0570   IF n<2 THEN
0580     RETURN n
0590   ELSE
0600     RETURN fib(n-1)+fib(n-2)
0610   ENDIF
0620 ENDFUNC fib
0630 
0640 this'is'a'label:
0650 and'a'label: // with comment.
0660 DATA "CBM BASIC",2,"Comal",80,"Python",3.7