[Inkscape-devel] NEW: invert selection, -in-all-layers

The new Invert Selection command (the `!' key) inverts selection (deselecting what was selected and selecting everything else) within the current layer. Both Invert Selection and Select All now have "in all layers" variants that act across all visible and unlocked layers (Ctrl+Alt+A for Select All in All Layers, Alt+! for Invert Selection in All Layers).