It creates a small buttonbar, showing most of the HTML tags, which can be clicked to enter those tags into a text editor. The image below shows it being used with !Zap, but any text editor (e.g. !StrongED or !Edit) can be used.
The text can be anything and asterisks are used to mark where a line break should occur. Since the maximum length of the text is 255 characters, it is possible to program a button to insert a whole table with one click!
To permanently save any changes use the Save tags option shown on the buttonbar menu or iconbar menu.
The buttonbar is easily altered using a template editor such as !TemplED and a number of alternate templates are supplied for increased resolution, different fonts, and uncoloured buttons.
!HTMLbar was written with the aid of Dr Wimp and comes with a How does it Work? file explaining how it was used.