Update BazzBasic-AI-guide.txt

BazzBasic-AI-guide.txt

@@ -2,7 +2,7 @@
 **Name:** BazzBasic-AI-guide.txt  
 **Description:** BazzBasic BASIC interpreter language reference for AI. Use BazzBasic to write, debug, or teach code.    
 **File extensions:*** ".bas"*, *".bb"*  
-**Version:** This guide is written for BazzBasic version 1.2 and is updated 01.04.26 (ddmmyy)  
+**Version:** This guide is written for BazzBasic version 1.2 and is updated 07.04.26 (ddmmyy)  
 **URL:** This guide is stored and updated at https://huggingface.co/datasets/EkBass/BazzBasic_AI_Guide
 # END METADATA
 
@@ -27,11 +27,14 @@
 ## ⚠️ Critical Rules — Read First
 | Rule | Detail |
 |------|--------|
+| Every variable must be introduced with LET exactly once before any use | LET <var> |
 | Variables end with `$` | `name$`, `score$`, `x$` |
+| Variables must describe purpose | no x$, tmp$, a$ unless loop index |
 | Constants end with `#` | `MAX#`, `PI#`, `TITLE#` |
 | Arrays declared with `DIM`, end with `$` | `DIM items$` |
 | First use of variable requires `LET` | `LET x$ = 0` — after that `x$ = x$ + 1` |
 | FOR and INPUT auto-declare, no LET needed | `FOR i$ = 1 TO 10` |
+| Avoid GOTO | Supported only for historical reasons |
 | Functions defined **before** they are called | Put at top or INCLUDE |
 | Function name ends with `$`, called with `FN` | `FN MyFunc$(a$, b$)` |
 | Function return value **must** be used | `PRINT FN f$()` or `LET v$ = FN f$()` |
@@ -40,6 +43,18 @@
 | `+` operator does both add and concatenate | `"Hi" + " " + name$` |
 | Division always returns float | `10 / 3` → `3.333...` |
 
+
+### Common AI Mistakes
+- forgetting LET  
+- using LET inside subs (wastes computing time, prefer [inits] section)
+- calling function before definition  
+- not using return value from FN  (if not other chance, use temp$ to get it)
+- passing arrays to functions  
+- mixing $ and #
+- using LET on subs or loops
+- forgots to use SCREENLOCK/SCREENUNLOCK
+- Does not read: ## Performance Tips
+
 ---
 
 ## For context from the author:
@@ -63,6 +78,7 @@ LET x$, y$, z$ = 10 ' Multiple declaration
 
 ' constants
 LET TITLE# = "My Game"      ' String constant
+LET_VER# = 1.2				' Numeric constant
 ```
 
 **Scope:** All main-code variables share one scope (even inside IF blocks).  
@@ -112,7 +128,7 @@ ELSE
     PRINT "F"
 END IF                      ' ENDIF also works
 
-' One-line IF (GOTO/GOSUB only)
+' One-line IF
 IF lives$ = 0 THEN GOTO [game_over]
 IF key$ = KEY_ESC# THEN GOTO [menu] ELSE GOTO [play]
 
@@ -500,7 +516,7 @@ RETURN
 
 ---
 
-## Rosetta-Code example
+## Rosetta-Code examples
 
 ### Animate a pendulum