doc: lots more exiciting expressions for the sample file

doc/sample/Expressions.im

@@ -1,4 +1,3 @@
-/*
 y = 1 + 2 * 3 / 4 * 5 - 6 + 7 multiplyBy:2.
 z = w = 2 + 3 multiplyBy:2.
 x = (((1 + 2 * 3) multiplyBy:3) add: 5) + 2.
@@ -6,8 +5,6 @@ x = ((1 + 2 * 3) multiplyBy:3).
 p = 5 multiply(by:3 add:(2 + 1)).
 q = 10 squared squared.
 
-
-
 p1
     setAge:2 squared squared + 4 squared multiply(by:2 add:4 + 1 * 3)
     in:"mon" + "ths".
@@ -22,13 +19,10 @@ x = OrderedCollection new
 	add: 6;
 	yourself.
 
-
 age = Person new(name:"John Doe" age:34)
     setAge:144 inUnit:"months";
     ageInMonths.
 
-
-
 x = 5.
 q = 10 if x > 2.
 q = if x > 2 then 10 else 20 end.
@@ -40,7 +34,6 @@ if x > 2 then
 else
 	cout put:"Less"
 end
-*/
 
 Q = match yz in
 	1 => age = age,
@@ -53,4 +46,15 @@ while x > 2 do
 	cout put:"message"
 end
 
-cout put:"message" while x > 2.
+for i in 0 to:100 step:2 do
+    cout put:"Count is {i}"
+end
+
+cout put:"message" while x > 2.
+cout put:"Count is {i}" for i in 0 to:100 step:2.
+
+z = do
+    x = 1.
+    y = 2.
+    ^x + y
+end.