I noticed the new MathCAD 14 has many more options for controlling dimensions and units. However, my need is for true custom dimensions. For example, I want to use the mass of the electron in place of the kilogram, the Compton wavelength in place of the meter, 3.741173x10^-19 coul for charge, and instead of defaulting to time, I prefer to default to a measurement of frequency at 1.23559x10^20 Hz. Are the dimensions and units hard-coded into M14, or is there a file I can change? Thanks, Dave
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