In answer to your question regarding not finding information regarding non official Blizzard games ..
Here is the post that has been on this site for over a decade.
http://www.wowinterface.com/forums/s...84&postcount=2
No 4 is the item that has been referred to.
And Blizzards EULA
http://eu.blizzard.com/en-gb/company/legal/eula.html
Section 1 C i is what you want to read
As has been said in the past on a similar subject, you have a few options open to you...
1. See if an existing addon has an archived version that will work on the version you are running if the current doesn't work
2. Locate an addon that works similar and investigate the code to see what commands are used and hope they work in an earlier version, but seeing as Blizzard updates their API code addons generally have to change to match.
3. Locate an archived format of API code structure for the commands you are looking at ( if they exist ) and test them out
4. Wait for Blizzard to release Classic Servers and await their addon functionality, which may or may not be different to the version you require.
5. Talk to the creators of the version you are using and ask them for help ..
But note:
If you are using non Blizzard versions of the game then you should not be using an addon site that honours Blizzards policies .. see above links .. as you are going against the rules stated on both sites.
The reason why you are not getting the answers you need are most likely due to the above, and to the fact that some of the addon users about nowadays may not have played with classic addons or have forgotten the functionality changes done over the years to be able to assist you beyond what has been answered already.
I myself wrote my first addon after Burning Crusade was released, and none have been map icon orientated so cannot even offer help with the equivalent current code functionality to at least point you in a direction to allow you to investigate further.