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

Calculating dependencies ... done!
Dependency resolution took 1.03 s (backtrack: 0/20).

[ebuild  N     ] sci-electronics/electronics-menu-1.0-r1::gentoo  12 KiB
[ebuild  N     ] dev-util/intltool-0.51.0-r3::gentoo  159 KiB
[ebuild  N     ] sci-electronics/pcb-4.3.0::gentoo  USE="dbus gif jpeg png -doc -gcode -gsvit -gui -m4lib-png -nelma -test -tk -toporouter" 5258 KiB

Total: 3 packages (3 new), Size of downloads: 5429 KiB