Game concept

Extra Measure

The game also links it as Extra Measures, Measure, Measures.

From the game's encyclopedia

Not every Character can pull off a Scheme with Skill alone — when the Target is too tough, paying for Extra Measures can help to compensate for one weakness at the expense of another.

Measures are optional: use them tactically.

The game's text for patch 1.20.1.2. Words in blue are entries of the encyclopedia: hover one to read it, as in the game.

Extra Measure is an entry of Crusader Kings III's in-game encyclopedia. The game explains it: "Not every Character can pull off a Scheme with Skill alone — when the Target is too tough, paying for Extra Measures can help to compensate for one weakness at the expense of another." It is part of Scheme. The game also links it as Extra Measures, Measure and Measures. Patch 1.20.1.2, from game/common/game_concepts/00_game_concepts.txt and game/localization/english/game_concepts_l_english.yml.

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Source: game/common/game_concepts/00_game_concepts.txt, game/localization/english/game_concepts_l_english.yml and the English localisation, Crusader Kings III 1.20.1.2.