mjsousa [Sun, 16 Feb 2014 00:37:40 +0000] rev 867
Add option to control support for nested comments (default is off, as defined in IEC 61131-3 v2)
mjsousa [Sat, 15 Feb 2014 23:58:16 +0000] rev 866
Add support for nested comments
mjsousa [Wed, 12 Feb 2014 17:02:08 +0000] rev 865
Fix bug: when checking compatibility between GLOBAL and EXTERNAL variables, must only enforce GLOBAL CONSTANT => EXTERNAL CONSTANT.
Reverse CONSTANT implication is not enforced, and neither is RETAIN compatibility.