https://manpages.ubuntu.com/manpages/xenial/man3/Tk_UnderlineChars.3tk.html
Ubuntu Manpage: Tk_MeasureChars, Tk_TextWidth, Tk_DrawChars, Tk_UnderlineChars - routines to...
routines to measure and display simple single-line strings.
ubuntumanpagetkroutines
https://manpages.ubuntu.com/manpages/xenial/man3/Tk_DrawChars.3tk.html
Ubuntu Manpage: Tk_MeasureChars, Tk_TextWidth, Tk_DrawChars, Tk_UnderlineChars - routines to...
routines to measure and display simple single-line strings.
ubuntumanpagetkroutines