What do the alphabetical Orokin Void mission types mean?

What do the alphabetical Orokin Void mission types mean? - Dictionary Text in Bokeh Effect

I've recently started grinding for prime parts on Warframe with the help of the Warframe Wiki. However, when I view the desired warframe, weapon, etc. in the wiki for drop locations, it shows the mission type along with a letter from A-C (e.g. Tower III Exterminate C). I am unsure about what the letter value represents.

Are there several layouts of each mission type's map and if so, is the letter value indicative of that layout? If that's not the case then what does it represent?






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What are Void missions in warframe?

VOID Missions are the special missions of Warframe. The VOID is a lost part of Tenno history, which contains many secrets and gear to be found. What makes a VOID Mission unique is the fact that they can only be accessed through the use of a key.

What enemies are in the void Warframe?

The Corrupted are enemies encountered in Orokin Void levels. Corrupted units are Corpus, Grineer, and Infested creatures implanted with a control device that hijacks their psyche, allowing the Neural Sentry of the Orokin Towers to manipulate them.



Warframe-Orokin Tower Raid using Void Keys




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