I thought it might be nice to include some locks on the production wheel. Clicking the appropriate button creates a curve intersecting the current point along which the production slider can move
Example 1: Click the Manufacturing icon to lock the manufacturing value, allowing you to vary your wealth and research as needed. In this example, Manufacturing would stay at 4, but the others would vary.
Example 2: Click between Wealth and Manufacturing to maintain the current 2:1 ratio between the two, allowing you to vary the research as needed. The leftmost point on this curve would be W-66.6%, M-33.3%, R-0%.
