I explored the font always disable it, but now I can't use it in the new version.

thanks for replying....Bhikkhu Pesala wrote: ↑Sat May 26, 2018 6:14 amThe value is a calculated value. It can be seen in the Font Information from the Font menu.
Average Character Width.png
Nothing will be changed. Advance width is set in the font. Average character width is just a calculated value like CapsHeight or x-height. It has no affect on the glyphs in your font.