| Command group | Flag affected | Reversible | Execute on client | Platform(s) |
| Classes | YES | NO | NO | All |
This command reads the specified class from the library file on disk into RAM, so that any changes made to that class using the notation are lost. The flag is set if the class is successfully re-read. A runtime error occurs if the specified class cannot be found.
# make change to a window class
Do$windows.wMyWindow.$objs.Field1.$visible.$assign()
Open window instancewMyWindow# do somethingRevert classwMyWindow## reset the Field1 on the saved window (NOT the current instance) to be visible