I'd like to take the remainder of my space here to deal with a question that sometimes causes a good deal of confusion among Journal readers, that is, the distinction between "official" and "unofficial" articles. There is considerable difference between an official addition to the rules (such as "Computers" in issue #1 or the various errata printed from time to time), a suggested variant (such as the Special Supplements), and rule-expansion type articles, such as this issue's "From Port to Jump-point." Official rules additions replace or revise any previous rules which have dealt with them. Official rules additions are rare, and will be clearly identified as such. Everything else in the Journal is optional.
What this means in practice is that we will occasionally print contradictory articles. Often, two (or more) writers will have equally valid ideas on some facet of Traveller. It would be stifling to say that one is right and all the rest are wrong simply because of the order in which they were presented. For example, "Seastrike" contains material dealing with underwater vehicular combat. It takes a particular approach, and gives a few suggested rules for dealing with this facet of the universe. However, referees need not use these rules if they have others they feel are better. Similarly, the fact that we have published an article on this topic will not prevent me from running another on a similar subject later, especially if the subject matter is approached in a significantly different but no less valid manner.