decode.* will solely decode the teletext packets into a grid of characters and
colours and other attributes stored in an agnostic way, then render.* will read
this grid and render the characters onto the screen with the Qt specific
methods.
pagex26base holds methods for converting between the enhancements
QList and teletext packets. A future page subclass for POP pages will
re-use those same methods.
The saving code is an attempt to be page function and page coding
agnostic so the same code can save (G)POP, (G)DRCS and MOT pages in
the future.
loadsave will be the home of page loading, URL exporting and also for
importing and exporting of other teletext file formats.