Here I am doing some light reading in JAR-OPS-1 and I continuously come across brackets (i.e. [ ] ) often with no characters in them. Or, text like this:
An operator must select and specify in the operational flight plan a take-off alternate [aerodrome] if it would not be possible to return to the [departure] aerodrome [ ] for meteorological or performance reasons. The take-off alternate
[aerodrome, in relation to the departure aerodrome,] shall be located within:
Why put aerodrome or departure in brackets rather than directly in the text? Why put brackets with no text?
Is it the changes to the reg they are highlighting? Is the author bracket-happy?