Update 'Coding Style'

Coding-Style.md

@@ -99,6 +99,60 @@ exit(error);
 ```
 
 ### Braces
+
+Curly braces for function definitions should rest on a new line and should not add an indentation level:
+
+```c
+uint64
+bytes_used(bwc_stream const *const stream)
+{
+  if(stream->T == 0xFF)
+      return stream->L + 1;
+  else
+      return stream->L;
+}
+```
+
+A new block should always be placed on a new indentation level:
+```c
+f = fopen('file');
+{
+  if(stream->T == 0xFF)
+      return stream->L + 1;
+  else
+      return stream->L;
+}
+fclose(f);
+```
+
+Curly braces should not be used for single statement blocks
+
+```c
+if(stream->T == 0xFF)
+    return stream->L + 1;
+else
+    return stream->L;
+```
+unless one of the following 4 exceptions applies:
+
+1. If either side of an if…else statement has braces
+```c
+if(stream->T == 0xFF)
+    return stream->L + 1;
+else
+    return stream->L;
+```
+2. If a single statement covers multiple lines
+```c
+```
+3. If the condition is composed of many lines
+```c
+```
+4. Nested if, in which case the block should be placed on the outermost if
+```c
+```
+
+
 ### Whitespace
 
 ```c