These function return the currently selected screen resolution resp. number of displayable colors.
svgalib(7), vgagl(7), libvga.config(5), vga_setmode(3), vga_getcurrentode(3), vga_getmodeinfo(3), vga_getgraphmem(3)
This manual page was edited by Michael Weller <firstname.lastname@example.org>. The exact source of the referenced function as well as of the original documentation is unknown.
It is very likely that both are at least to some extent are due to Harm Hanemaayer <H.Hanemaayer@inter.nl.net>.
Occasionally this might be wrong. I hereby asked to be excused by the original author and will happily accept any additions or corrections to this first version of the svgalib manual.
The man pages vga_getcolors(3) and vga_getydim(3) are aliases of vga_getxdim(3).