Insert Characters was used only as part of Glyph Transformation presets.
I find that the italic glyph transformer is fine on generating italics, and not too bad for Small Caps and Superscripts, but rather less useful for bold as it treats thick and thin strokes the same. It is better to trace a bitmap and then smooth it. A Glyph Transform preset was used to create ligatures too, but some work was needed afterwards to make them into proper Alphabetic presentation forms.
Of 1944 Glyphs in the Regular type style, 780 are composites, but complete composites was also used to create many more that are now simple glyphs: Æ and other ligatures, and all glyphs with cedilla, horn, ogonek, bar, etc. Old Style Figures, Nut Fractions, stacking diacritics, and combining diacritics all used Complete Composites too, at least as the inital stage of design.
Copy and paste was used to duplicate the Geometric Symbols, Arrows, Miscellaneous Symbols, some Maths Symbols, and Dingbats (nearly 600 glyphs) from my other fonts. They were then resized en masse
to fit the Caps Height of this font.
The greatly improved accuracy of complete composites in version 5.6 saves a lot of time in aligning accents (using my optical centre adjustment tip
for some glyphs). I have further improved CompositeData.xml while making this font, and will pass those improvements on later.