This is a detail but... in visual studio they have the shortcut CTRL-F2
This either creates a new bookmark on the current line (highlights the line blue) or removes one...
Pressing just F2 cycles through bookmarks
In oXygen there are 10 bookmarks, you can create a bookmark with
CTRL+Shift+0, CTRL+Shift+1, ..., CTRL+Shift+9
and you can go to a bookmark with
CTRL+0, CTRL+1, ..., CTRL+9
All these shortcuts are configurable from Options->Preferences dialog, Menu shortcut keys page.