* Updated SYNTAX to include preprocessor directives

* Added a preprocessor example program

SYNTAX

@@ -7,7 +7,8 @@ This virtual machine loosely follows traditional Intel x86 assembly syntax.
 1. REGISTERS
 2. MEMORY
 3. LABELS
-4. INSTRUCTION LISTING
+4. PREPROCESSOR
+5. INSTRUCTION LISTING
 	I.    Memory
 	II.   Stack
 	III.  Calling Conventions
@@ -74,7 +75,15 @@ Labels are specified by appending a colon to an identifier. Local labels are not
 Labels must be specified at the beginning of a line or on their own line.
 
 //////////////////////////////////////////////////
-// 4. INSTRUCTION LISTING ////////////////////////
+// 4. PREPROCESSOR ///////////////////////////////
+//////////////////////////////////////////////////
+
+TVM has a preprocessor that allows other source files to be included with the directive "%include filename.vm"
+
+During preprocessing, the entire included source file is inserted in place of the %include directive in memory.
+
+//////////////////////////////////////////////////
+// 5. INSTRUCTION LISTING ////////////////////////
 //////////////////////////////////////////////////
 
 Instructions listed are displayed in complete usage form, with example arguments, enclosed in square brackets.

programs/tinyvm/preprocessor/jsr.vm

@@ -0,0 +1,8 @@
+%include print_eax.vm
+
+start:
+	mov eax, 42
+	call print_eax
+
+	mov eax, 23
+	call print_eax

programs/tinyvm/preprocessor/print_eax.vm

@@ -0,0 +1,7 @@
+print_eax:
+        push ebp
+        mov ebp, esp
+        prn eax
+        pop ebp
+        ret
+