iOS Shortcuts

Tap and hold for options
With hardware keyboards, many Mac OS Shortcuts work in iOS
Command-Z Undo, removes the last action and replaces it with the previous contents
Command-X Cut, removes the selected item(s) and places them in the clipboard
Command-C Copy, places selected item(s) to the clipboard, leaving the selected item(s) in their current location
Command-V Paste, places the items stored in the clipboard at the location of the cursor.
Command-A Select All, highlights the entire contents of the location of the cursor.
Command-S Save document
Command-P Print

iOS Touch Shortcuts

Double tap to select text
Double tap and drag to select by word
Triple tap to select paragraph
Drag Highlight controls to expand or restrict selected text
Press and hold on space bar on on screen keyboard to move cursor like using a touchpad

iOS Screenshot Shortcuts