These are the packages that would be merged, in order:

Calculating dependencies ... done!
Dependency resolution took 1.01 s (backtrack: 0/20).

[ebuild  N     ] x11-libs/libXaw3d-1.6.6::gentoo  USE="-xpm" 471 KiB
[ebuild  N     ] x11-libs/libXtst-1.2.5::gentoo  USE="-doc" 285 KiB
[ebuild  N     ] x11-misc/xvkbd-4.1::gentoo  400 KiB

Total: 3 packages (3 new), Size of downloads: 1155 KiB