Undo

`⌘ Cmd` + `Z`

All hotkeys for iPad Smart Keyboard

General Return to iPad's home screen	`⌘ Cmd` + `H`
General Emoji keyboard	`Globe`
General App Switcher. Hold the Command key and keep pressing Tab key until you highlight the application you'd like to switch to	`⌘ Cmd` + `⭾ Tab`
General Spotlight Search	`⌘ Cmd` + `Space`
General Hold the Command key for a second to see supported keyboard shortcuts for any app	`⌘ Cmd`
Navigating pages Go to top or bottom of a page	`⌘ Cmd` + `↑ ↓`
Selecting and editing text Select all text	`⌘ Cmd` + `A`
Selecting and editing text Copy	`⌘ Cmd` + `C`
Selecting and editing text Cut	`⌘ Cmd` + `X`
Selecting and editing text Paste	`⌘ Cmd` + `V`
Keynote Bold	`⌘ Cmd` + `B`
Keynote Italics	`⌘ Cmd` + `I`
Selecting and editing text Undo	`⌘ Cmd` + `Z`
Selecting and editing text Redo	`⌘ Cmd` + `↑ Shift` + `Z`
Selecting and editing text Move cursor one word to the left	`⌥ Option` + `←`
Selecting and editing text Move cursor one word to the right	`⌥ Option` + `→`
Selecting and editing text Select previous word	`⌥ Option` + `↑ Shift` + `←`
Selecting and editing text Select next word	`⌥ Option` + `↑ Shift` + `→`
Slack Show the Quick Switcher	`⌘ Cmd` + `T`
Slack Close window	`⌘ Cmd` + `W`
Firefox Show next tab	`Control` + `⭾ Tab`
Safari Show all open tabs	`⌘ Cmd` + `↑ Shift` + `\`
Firefox Show previous tab	`Control` + `↑ Shift` + `⭾ Tab`
Pages Show/Hide ruler	`⌘ Cmd` + `R`
Slack Perform a search	`⌘ Cmd` + `F`
Keynote Lock position	`⌘ Cmd` + `L`
Mail Reply All	`⌘ Cmd` + `↑ Shift` + `R`
Sheets Insert Sheet	`⌘ Cmd` + `↑ Shift` + `N`
Chrome Reopen last-closed tab	`⌘ Cmd` + `↑ Shift` + `T`
Keynote Duplicate	`⌘ Cmd` + `D`
Chrome Open history	`⌘ Cmd` + `Y`
Chrome Activate voice search	`⌘ Cmd` + `↑ Shift` + `.`
Firefox Back	`⌘ Cmd` + `←`
Firefox Forward	`⌘ Cmd` + `→`
Firefox Open new Private tab	`⌘ Cmd` + `↑ Shift` + `P`
Microsoft Outlook Compose new message	`⌘ Cmd` + `:`
Mail View previous email	`⌘ Cmd` + `↑`
Mail View next email	`⌘ Cmd` + `↓`
Microsoft Outlook Forward message	`⌘ Cmd` + `J`
Tweetbot Timeline	`⌘ Cmd` + `1`
Tweetbot Mentions	`⌘ Cmd` + `2`
Tweetbot Messages	`⌘ Cmd` + `3`
Tweetbot Stats	`⌘ Cmd` + `4`
Tweetbot Search	`⌘ Cmd` + `5`
Microsoft Outlook Close	`Esc`
Facebook Messenger Send	`⌘ Cmd` + `⤶ Enter`
Tweetbot Compose	`⌘ Cmd` + `N`
Mail Forward	`⌘ Cmd` + `↑ Shift` + `F`
Mail Mark email as junk	`⌘ Cmd` + `↑ Shift` + `J`
Mail Flag email	`⌘ Cmd` + `↑ Shift` + `L`
Mail Mark email as unread	`⌘ Cmd` + `↑ Shift` + `U`
Mail Search mailbox	`⌘ Cmd` + `⌥ Option` + `F`
Mail Send email	`⌘ Cmd` + `↑ Shift` + `D`
iMovie Detach audio	`⌘ Cmd` + `⌥ Option` + `B`
Mail Minimize draft	`⌘ Cmd` + `M`
Keynote Underline	`⌘ Cmd` + `U`
Notes Set in title (H1) format	`⌘ Cmd` + `⌥ Option` + `T`
Notes Set in heading (H2) format	`⌘ Cmd` + `⌥ Option` + `H`
Notes Add checklist box	`⌘ Cmd` + `⌥ Option` + `L`
iMovie Go to beginning	`Ctrl` + `←`
iMovie Go to end	`Ctrl` + `→`
iMovie Go forward 10 frames	`↑ Shift` + `←`
iMovie Zoom in	`⌘ Cmd` + `↑ Shift` + `+`
iMovie Zoom out	`⌘ Cmd` + `-`
iMovie Trim clip start	`⌥ Option` + `[`
iMovie Trim clip end	`⌥ Option` + `]`
iMovie Mute audio in selected clip	`⌘ Cmd` + `↑ Shift` + `M`
iMovie Show audio waveforms	`Ctrl` + `S`
Keynote Copy style	`⌘ Cmd` + `⌥ Option` + `C`
Keynote Add comment	`⌘ Cmd` + `↑ Shift` + `K`
Pages Show word count	`⌘ Cmd` + `↑ Shift` + `W`
Keynote Send to front layer	`⌘ Cmd` + `⌥ Option` + `↑ Shift` + `F`
Keynote Send to back layer	`⌘ Cmd` + `⌥ Option` + `↑ Shift` + `B`
Sheets Go to previous sheet	`⌘ Cmd` + `↑ Shift` + `[`
Sheets Go to next sheet	`⌘ Cmd` + `↑ Shift` + `]`
Keynote Play slideshow	`⌘ Cmd` + `⌥ Option` + `P`
Keynote Show transitions and builds	`⌘ Cmd` + `⌥ Option` + `A`
Keynote Show presenter notes	`⌘ Cmd` + `⌥ Option` + `N`
Reminders Show reminder details	`⌘ Cmd` + `Control` + `I`
Slack Move up	`↑`
Slack Move down	`↓`
Slack Jump to previous channel	`⌥ Option` + `↑`
Slack Jump to next channel	`⌥ Option` + `↓`
Slack Jump to previous unread channel	`⌥ Option` + `↑ Shift` + `↑`
Slack Jump to next unread channel	`⌥ Option` + `↑ Shift` + `↓`
Slack Toggle the channel list	`⌥ Option` + `
Slack Show the Quick Switcher	`⌘ Cmd` + `K`
Facebook Messenger Line break	`⤶ Enter`
Tweetbot Faves	`⌘ Cmd` + `6`
Tweetbot Profile	`⌘ Cmd` + `7`
Tweetbot Lists	`⌘ Cmd` + `8`
Tweetbot Mutes	`⌘ Cmd` + `9`