Problems With 'Text Editor' Tutorial on Embarcadero Web Site (http://docwiki.embarcadero.com/RADStudio/Berlin/en/Starting_your_first_RAD_Studio_application_Index_(IDE_Tutorial))

Having trouble following the 'Text Editor' tutorial on the Embarcadero web site . . .

Almost all the declarations show “Error E2003 Undeclared Identifier”   in almost every line in the “Structure” section of the IDE . . .

I am unable to trace the errors, I am not advanced enough to do so!!

Using Delphi Berlin 10.1 – without Update 1 as the update causes me trouble too!

TIA

John, UK