QTeletextMaker is a teletext page editor with an emphasis on
Level 2.5 enhancement editing.

Features
* Load and save pages in TTI format.
* Rendering of pages in Levels 1, 1.5, 2.5 and 3.5 including
Local Objects and side panels.
* Import and export of single pages in t42, EP1 and HTT formats.
* Export PNG and animated GIF images of pages.
* Undo and redo of editing actions.
* Interactive X/26 Local Enhancement Data triplet editor.
* Editing of X/27/4 and X/27/5 compositional links to
enhancement data pages.
* Palette editor.
* Configurable zoom.
* View pages in 4:3, 16:9 pillar-box and 16:9 stretch aspect
ratios.
* View pages in mix and attribute-less monochrome modes.