Claro/docs/COMPATIBILITY.md

Compatibility syntax

You do not need these spellings for your first programs. Learn the recommended beginner syntax first. These older forms remain supported so existing scripts do not break.

• Older SET score TO 8 means the same as SET score 8.
• Older ASK "Number?" AS answer means the same as ASK "Number?" answer.
• Older ENDIF, DONE, and LEARNED close choices, loops, and functions; the beginner path uses END for all three.
• Older TEACH add TAKES a, b and CALL add WITH 2, 3 correspond to TEACH add a b and DO add 2 3.

This complete older-style program is covered by an executable compatibility test:

TEACH add TAKES a, b
    RETURN a + b
LEARNED
CALL add WITH 2, 3
SAY RESULT
SET score TO 8
ASK "Number?" AS answer
IF answer = 4
    DO 2 TIMES
        SAY score
    DONE
ELSE
    SAY "no"
ENDIF

Enter 4. It prints 5, asks Number?, then prints 8 twice.

Do not automatically replace every AS or TO: commands such as READ FILE "note.txt" AS note and ADD "milk" TO items still need those words.