Would be nice if there were a way to define constants for use in 4D without creating a plugin. There is an outstanding feature request for this already.
Logically I would think defining them in the On Server Startup
database method would be a good place for them. Or having it as part of the explorer menu options.
Code could look like this if defined programatically:
` we want a constant for use throughout 4D C_{datatype}_CONSTANT("Constant name";value)