CMD+Z Undoes the last command CMD+SHIFT+Z Redoes the last command TAB Tab SHIFT+TAB Untab CMD+B Set a bold style CMD+I Set a italic style CMD+U Set a underline style CMD+SHIFT+S Set a strikethrough style CMD+BACKSLASH Clean a style CMD+SHIFT+L Set left align CMD+SHIFT+E Set center align CMD+SHIFT+R Set right align CMD+SHIFT+J Set full align CMD+SHIFT+NUM7 Toggle unordered list CMD+SHIFT+NUM8 Toggle ordered list CMD+LEFTBRACKET Outdent on current paragraph CMD+RIGHTBRACKET Indent on current paragraph CMD+NUM0 Change current block's format as a paragraph(P tag) CMD+NUM1 Change current block's format as H1 CMD+NUM2 Change current block's format as H2 CMD+NUM3 Change current block's format as H3 CMD+NUM4 Change current block's format as H4 CMD+NUM5 Change current block's format as H5 CMD+NUM6 Change current block's format as H6 CMD+ENTER Insert horizontal rule CMD+K Show Link Dialog