Lesser-known UI interactions

Double click to select text

Triple click to select line

Click, then hold shift and click somewhere else to select a larger block

shift+arrow to increase selection

del to delete forwards

control backspace/del to delete by word

control + arrows to move by words

pageup / pagedown / home / end are things

alt-a right arrow to move cursor to end of a text area, alt-a left arrow etc

click bottom right to show desktop

alt tab to switch between apps

alt l to move focus to browser url bar

alt , to open preferences

tab to have focus move across links on webpage

shift tab to move backwards

space to click button

escape to remove cursor focus