Refactor AutoLISP Basics documentation to improve structure and add new examples

Author: vivekkpatel

docs/AutoCAD/AutoLISP Basics.md

@@ -13,6 +13,7 @@
   - Trace Window : This is useful for debugging, showing the flow of execution.
 - You can Use `Appload` button or `Ctrl + F9` to load your lisp code into AutoCAD.
 - You can add your Lisp file to Startup Suite so that it loads automatically when AutoCAD starts.
+- You can also run Lisp Code Directly in AutoCAD Command Line 
 
 ## Sample Code 
 - Here is a simple AutoLISP function that prints "Hello, World!" to the command line when you type `hello` in AutoCAD.
@@ -23,7 +24,7 @@
 )
 ```
 
-## AutoLISP Functions
+## Basic Syntax
 
 ### Comments
 - Use `;` to add comments in your code. Anything after `;` on the same line is ignored by AutoLISP.
@@ -46,14 +47,17 @@
 (alert "This is a message box!")
 ```
 
-### Command 
-- Used to execute AutoCAD commands from within AutoLISP.
+### If Statement
+- Used for conditional execution of code.
 ```lisp
-(Command "LINE" (list 0 0) (list 100 100) "")
+(if (> 10 5)
+  (princ "10 is greater than 5")
+  (princ "10 is not greater than 5")
+)
 ```
 
-### If Statement
-- Used for conditional execution of code.
+### IF Else Statement
+- Used for conditional execution with an alternative path.
 ```lisp
 (if (> 10 5)
   (princ "10 is greater than 5")
@@ -69,7 +73,30 @@
 )
 ```
 
+## Special Functions
 
+### Setq
+- Used to assign values to variables.
+```lisp
+(setq myVariable 10)
+(princ myVariable) ; This will print 10
+```
+
+### GetPoint
+- Used to get a point from the user in the drawing area.
+```lisp
+(setq userPoint (getpoint "\nSelect a point: "))
+(princ userPoint) ; This will print the selected point coordinates
+```
+
+### Command 
+- Used to execute AutoCAD commands from within AutoLISP.
+- `""` is used to indicate the end of a command sequence, similar to pressing Enter.
+```lisp
+(setq a (getpoint "\nEnter First Point : "))
+(setq b (getpoint "\nEnter Second Point : "))
+(Command "LINE" a b "")
+```
 
 ### Table Search
 - Used to search for a value in a list or table.