READCODE and WRITECODE for a PIC16F727

[ScaleRobotics]

No problem. On the PIC18F2520 it is located in section 1.2. But on the PIC16F887, I just see a short reference in section 10.0

Depending on the setting of the Flash Program
Memory Self Write Enable bits WRT<1:0> of the
Configuration Word Register 2, the device may or may
not be able to write certain blocks of the program
memory.

So, no, its not real clear.