Some updates to CODING_STYLE.md

CODING_STYLE.md

@@ -5,7 +5,24 @@ You should use tabs for indentation.
 ## Naming convention
 Use `lowerCamelCase` for functions, variables and table keys. Use `UPPER_SNAKE_CASE` for constants and `lower_snake_case` for filenames.
 
-## Other
+## Blocks
+Keywords used to open blocks (i.e. `then`, `do`) should go to the same line as the statement:
+```lua
+if condition then
+    ...
+end
+```
+or:
+```lua
+while condition do
+    ...
+end
+```
+
+## Variables
+General rule is to keep as much variables local as possible. If variable must be global then it should go to `industrialtest` table also under subnamespace if appropriate (the same applies to functions).
+
+## Tables
 If table contains one element then it can be inlined:
 ```lua
 someTable={element}