Comment 1 for bug 1090744

There is no definitive syntax definition for sigscr.dat files.
For OR, it has been decided to follow standard practice and make it compulsory to use braces on nested if-statements.
This is a necessity when the number of 'else' statements does not match the number of 'if' statements - otherwise it is then not clear to which 'if' a certain 'else' relates.
It does not violate any MSTS rules, so this rule does not compromise the use of scripts in MSTS.