09 0d 0a     /* signature */

1. .M"Hello World"    will display Hello World
   .MHello World      same with above
   The text in quotation marks is to display that text
   The quotation marks may not be necessary if the text does not match the special symbols.

2. .M<text1><connector><text2>
   Possible <connector>
       ^ Printing text in exponent form, <text2> in the top right corner of <text1>
       / Printing in fractional form, <text1> is on top <text2> is below
       ~ Connects <text1> and <text2>
   Example:
       - .M "x"^"y"
       - .M "abc"/"x"
       - .M "a "~"B"/"C"^"2"
   The order of precedence is ^ / and ~ respectively.
   However, we can control the order by using parentheses, for example:
       - .M (B/C)^2~ ~B/C^2
   If you want to type parentheses, put them in quotation marks.

3. .M<function>(<text1>,<text2>,...)
   The possible <function> are as follows
       - [ ]          big brackets
       - int(a,b,c)   integrate function a from b to c, example: int(TestFunc,From,To)
       - cint(a,b,c)  close integral a from b to c, example: cint(TestFunc,From,To)
       - lim(a,b)     limit function a Condition b, example: lim("sin(x)",x->0)
       - root(x)      square root sign, example: root(4+5)
       - conj(x)      cross mark sign, example: conj(3+4i)
       - abs(x)       absolute value sign, example: abs(4/5)
       - sum(x)       sum sign, example: sum(2i+1,i=1,10)
       - pie(x)       product sign, example: pie(2x,x=1,k)
   Example:
       - .M[2/3]^6
       - .Mint("sin(x)",0,)~" dx "
       - .Mcint("sin(x)"/"cos(x)",0,2)~" "~[dx/3]
       - .Mlim("sin(x)"/x,x->0)
       - .Mroot("X"/"2+3")
       - .Mconj(x+2i)
       - .M ~sum(n(n+1),n=1,10)
       - .M ~pie("(s + a i )",i=1,n)