The cursor move keys in conjunction with the ctrl and shift keys have other functions. The simplest is the shift key: using the cursor keys while shift is held down marks or selects the characters starting with the one next to the start position of the cursor. The left and right keys clearly select characters along the line - backwards and forwards respectively.
Have a go at selecting along the line: type some text into Word or an e-mail then press and hold shift and press the left cursor move key. Characters are selected backwards from the cursor position. Now move the cursor to somewhere in the middle of the text, press and hold shift then press the right cursor move key. Again, characters are selected from the start cursor position.
There are shift keys, by the way, at both ends of the keyboard, usually above the ctrl key on the left and the cursor arrow keys on the right.
Pressing and holding ctrl then using the left or right cursor arrows moves the cursor to the start of the next word to the left or right. This is useful if you want to insert a word in the text
Have a go at moving one word at a time: with the text entered in the previous trial, put the cursor somewhere in the centre then press and hold the ctrl key and try the left and right cursor move arrows: the cursor is placed at the start of words to the left or right
Ctrl with the up or down arrow keys moves the cursor to the start of the previous or next paragraphs
Have a go at moving the cursor one paragraph at a time: ensure you have more than one paragraph in the trial document, place the cursor somewhere in the middle then press and hold the ctrl key and then the up or down arrow keys
There’s one more option for the cursor keys - can you guess?