Editing GoArch:History Project (section)

==== "Decades" ====
If the D'ni decade containing that hahr does not yet exist, it should be created as well. Because the D'ni number system is in base-25, a "decade" is 25 years long, so for instance the decades surrounding 1124 DE are the 1075s DE, the 1100s DE, and the 1125s DE.

Every decade page's title should follow the convention of "''<decade>''s DE", e.g. "1100s DE".

Decade pages '''must''' have the {{tlx|Hahrtee fahrah}} template at the top of the page. This template takes the D'ni century ("hahrtee fahrah") as the only parameter. Note that although the D'ni calendar system includes a 0 DE, D'ni centuries start at 1. Each century is 625 years long, because of the D'ni's base-25 number system. Thus, the first century is 0 - 624 DE, the second century is 625 - 1224 DE, and so on.

Decade pages should also list the hahrtee that comprise them. The wording is typically as follows:
<blockquote>
The '''''<decade>''s DE''' was a [[:Category:D'ni decades|D'ni decade]] which began on Leefo 1 ''<first hahr>'' DE, and ended on Leenovoo 29 ''<last hahr>'' DE.
</blockquote>

Every decade page '''must''' also contain the template {{tlx|Activity by year for decade}}, with the special <nowiki>{{PAGENAME}}</nowiki> magic word as the template's parameter. This template will pull every event from each page tagged with that decade's activity category, order them by hahr, and link them. This cuts down on the amount of maintenance and busy-work required to keep every part of the timeline up to date as the Archive expands. You can see an example of what this looks like on the [[975s DE]] page.