What are the keystrokes to
- go to the next cell? (depending on cell(s) currently selected)
- go to the previous cell? (depending on cell(s) currently selected)
- select the enclosing group of cells? (i.e. up one level)
- select the first cell of the currently selected cell group? (i.e. down one level, further down into the cell if you are on the innermost cell bracket level)
- select the last cell of the currently selected cell group? (i.e. down one level)
I know one might construct such things form SelectionMove, but these functions might already be there and they might already be assigned to keys. (I have no idea how to achieve a key binding programmatically).
ctrl-., i.e. the same as extend selection within a cell. – Szabolcs Jan 31 '17 at 20:09