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

Calculating dependencies ... done!
Dependency resolution took 1.04 s (backtrack: 0/20).

[ebuild  N     ] app-text/rman-3.2-r2::gentoo  78 KiB
[ebuild  N     ] dev-lang/tk-8.6.17:0/8.6::gentoo  USE="threads truetype (-aqua) -debug -test -xscreensaver" 4486 KiB
[ebuild  N     ] app-text/tkman-2.2-r3::gentoo  224 KiB

Total: 3 packages (3 new), Size of downloads: 4787 KiB