Update README

GeorgDangl · Jul 12, 2019 · f95dcf0 · f95dcf0
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@@ -124,6 +124,8 @@ node: {
 `EULER`                                    | Mathematical constant e = 2,718282    |
 `'-' expression`                           | Unary minus sign (negative numbers)   |
 `'+' expression`                           | Unary plus sign (positive numbers)    |
+`'(' expression ')' expression`               | Expressions without multiplication sign, e.g. `2(3)` -> `2*(3)` |
+`expression '(' expression ')'`              | Expressions without multiplication sign, e.g. `2(3)` -> `2*(3)` |
 
 _expression_ may be any expression as functions can be nested. Example: `DEG(2*PI)` or `LOG(10^3)`.