из PFC 11.0 Help'a

For a quick start
To get started with a PFC application:

1 Define a library list that contains PFC PBLs:
PFCAPSRV.PBL
PFCDWSRV.PBL
PFCMAIN.PBL
PFCUTIL.PBL
PFCWNSRV.PBL
PFEAPSRV.PBL
PFEDWSRV.PBL
PFEMAIN.PBL
PFEUTIL.PBL
PFEWNSRV.PBL

2 In the Application painter's Script view, define a global variable, gnv_app, of type n_cst_appmanager.
n_cst_appmanager gnv_app
The variable name must be gnv_app
PFC objects, functions, and events require that you define the application manager as gnv_app, with a data type of n_cst_appmanager (or an n_cst_appmanager descendant).
3 Add PowerScript code to your application's Open event to create n_cst_appmanager and call the pfc_Open event:
gnv_app = CREATE n_cst_appmanager
gnv_app.Event pfc_Open(commandline)
4 Add PowerScript code to your application's Close event to call the pfc_Close event and destroy n_cst_appmanager:
gnv_app.Event pfc_Close( )
DESTROY n_cst_appmanager
5 Add PowerScript code to your application's System Error event to call the pfc_SystemError event:
gnv_app.Event pfc_SystemError( )
6 Close the Application painter and save the changes.
7 Open the user object n_cst_appmanager (found in PFEAPSRV.PBL).
8 Call n_cst_appmanager functions in the Constructor event to initialize instance variables for version, company, and INI file. (You can assign values to these variables in the Properties view)
9 Call n_cst_appmanager functions in the pfc_Open event to enable the application services you want.
10 Add code to the pfc_Open user event to open your application's initial window (typically the frame window), optionally including a call to the of_Splash function, which displays a splash screen.
11 Save n_cst_appmanager.

Кстати,
"Господа, поручили мне тут аппликушку создать - не сильно сложную, десятка три окон. ...а в качестве фреймворка выбрал PFC "
Это будет "замечательный" квест если Вы раньше не использовали PFC.
Удачи.