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doc/VM

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+Supported types
+---------------
+Nil
+Integer
+Float
+String
+Array
+Table
+Function
+NativePointer
+
+Operations
+----------
+
+Stack operations:
+   pshn [int]           Push int
+   pshz                 Push zero (or false)
+   psht                 Push true
+   pshr [float]         Push float (real)
+   pshs [string]        Push string
+   pshf [function]      Push function
+   newa [array]         Push (create) empty array
+   newt [table]         Push (create) empty table
+   pop
+   dup
+
+Local variables:
+   setl [int]           Set stack top as indexed local variable
+   getl [int]           Get indexed local variable and place on stack
+
+Function operations:
+   call [n_pars]        Enter function on stack toplevel (passing n next stack values as parameters)
+   ret                  Leave a function (return value in stack)
+   retn                 Leave a function (return nil)
+
+Control flow:
+   bz [pc]              Branch if zero
+   bnz [pc]             Branch if not zero
+   jmp [pc]             Unconditional jump
+
+Logical/arithmetic
+   sum                  Sum top 2 values in stack
+   mul                  Multiply top 2 values in stack