Changed in-pex parent folder parameters

CODE:
-Changed parameters of PhraseExpress > XBNPE: Parent folder: [X] Case
sensitive, [X] Remove trailing, [ ] Manual confirm, [X] Execute only in
"TextPad"
DOCUMENTATION:
-Added demo video: demo_video.html
-Minor updates to example code used in demo video :
tasks/snr.html#findxmplftst