Release 10.1A: OpenEdge Development:
ADM Reference

getpropname and setpropname functions

Every public-readable property must have a function defined to return the current value of the property. Similarly, every public-writable property must have a function defined to set a new value for the property. These functions conform to certain conventions:

get — The get function identifier takes the form getpropname. The function accepts no arguments, and returns the current value of the property. It can also perform other processing, if needed.
set — The set function identifier takes the form setpropname. It accepts a single argument—the new value for the property—and returns TRUE/FALSE depending on whether it succeeded in changing the value. It can perform additional processing, if needed.

A very small number of these functions vary slightly from the model described here, but these differences are not significant.