$pwrp_appl

This is the directory where you should keep source codes for your own applications belonging
to the project and also for codes that you want to link with the plc-program.

One file of special interest that should be kept here is

ra_plc_user.h

This file will by default be included when you compile the plc-code. It is however included
from a directory in the build-tree (/bld/common/inc).

Note that the ra_plc_user.h is automatically generated on $pwrp_inc when the first PlcPgm
is compiled. If you need to modify ra_plc_user.h, you should copy it to $pwrp_applcode and
keep the original there.

All header-files located $pwrp_appl or in subdirectories and which should be included with the
plc-program must be copied to the $pwrp_inc-directory (/bld/common/inc).

If you have some small functions that you only link with the plc-program and nothing else
then you typically place this code in a file called:

ra_plc_user.c