created using https://www.glyphrstudio.com/online/ (online tool)

originally from the font DejaVuSansMono but narrowing it to these ranges ("Number Forms", "Arrows", "Mathmatical Operators", "Miscellaneous Technical", "Miscellaneous Symbols and Arrows"), and adding roman numeral glyphs specific to function keys to "Number Forms" for use with F1-F12 keys.

Many fonts may not have a lot of these symbols so it's nice to have them here as backup to merge with other fonts instead of trying to do something like modify those fonts.

the function keys: 
	note that there's a button to add characters
	add a 'F', reposition (233,1400,400,600)
	add a '(', reposition (50,1400,200,1400)
	add the number directly below, reposition (233,800,400,800)
	//
	then can just copy the first one and delete the number and replace with a new one and reposition.  For 10,11,12 x=633.  4 and others with holes will look maybe a little weird but it's fine.
