Initial data commit

Task/Menu/True-BASIC/menu.basic

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+DIM menu$(4)
+MAT READ menu$
+DATA "fee fie", "huff and puff", "mirror mirror", "tick tock"
+
+FUNCTION sel$(choices$())
+    IF UBOUND(choices$) - LBOUND(choices$) = 0 THEN LET sel$ = ""
+    LET ret$ = ""
+    DO
+       FOR i = LBOUND(choices$) TO UBOUND(choices$)
+           PRINT i; ": "; choices$(i)
+       NEXT i
+       PRINT prompt$;
+       INPUT index
+       IF index <= UBOUND(choices$) AND index >= LBOUND(choices$) THEN LET ret$ = choices$(index)
+    LOOP WHILE ret$ = ""
+    LET sel$ = ret$
+END FUNCTION
+
+PRINT sel$(menu$())
+END