Documentation improvements

CHANGELOG.md

@@ -21,10 +21,14 @@ Detailed flow analysis was slow, broken, hard to maintain, and didn't even help
 
 * Added `*'=` and `<<<<` operators.
 
+* Added support for zeropage pseudoregisters, allowing for some operators work with more types of operands. 
+
 * Added return dispatch statements.
 
 * Added `break` and `continue` statements.
 
+* Allowed the `else if` combination (i.e. the `else` branch doesn't have to be in braces if it's just a single `if`-`else` statement).
+
 * Added octal and quaternary literals.
 
 * Fixed several optimization bugs.

doc/lang/operators.md

@@ -161,7 +161,8 @@ and fail to compile otherwise. This will be changed in the future.
 `mutable long -= simple long`
 
 * `*=`: multiplication in place  
-`mutable byte *= constant byte`
+`mutable byte *= constant byte`  
+`mutable byte *= byte` (zpreg)
 
 * `*'=`: decimal multiplication in place  
 `mutable byte *'= constant byte`

doc/lang/syntax.md

@@ -192,6 +192,23 @@ for <variable>,<start>,<direction>,<end> {
     
     There is no `paralleldownto`, because it would do the same as `parallelto`.
     
+### `break` and `continue` statements
+
+Syntax:
+
+```
+break
+break for
+break while
+break do
+break <variable>
+continue
+continue for
+continue while
+continue do
+continue <variable>
+```
+    
 ### `asm` statements
 
 See [Using assembly within Millfork programs](./assembly.md).