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*** VIEW MODE ***
Arrows to move, Z/X to zoom in/out (Z and X to return to (0, 0) or (0, f(0)) if snap is on), S to snap to y, A to enter function editor
*** EDIT MODE ***
UP/DOWN to change selection, LEFT/RIGHT to move cursor, Z to add, X to backspace/delete, S to convert Radians to Degrees or vice versa, A to exit the editor
*** CUSTOM FUNCTION DEFINITIONS ***
- xRoot(x, y) will calculate the Xth root of Y. xRoot(4, 256) returns 4
- logX(x, y) will calculate the logarithm with base X of Y. logX(10, 100000) returns 5
*** EXTRA NOTES ***
- The expression is evaluated just as Lua would evaluate any math expression
- Empty spaces while selecting something to add to the equation are actually spaces to improve readability!
- Zoom is limited to 1e+15 to minimise any issues with floating point math and infinite loops
- Some functions require 2 arguments, which explains the comma.
Feedback and additions welcome!