When in visual block mode is there a way to cause to the cursor to switch to the end/beginning of the block?
For example, in Excel this functionality is performed by the "." key. If the person has a block of cells selecting, then pressing the period key will cycle the cursor to each corner of the block. This allows the user to extend the block in the direction wanted. For example, if the user wants to extend the selection downwards, the cursor is moved to the top corner and then the down arrow key is pressed. What is the equivalent motion in Vim?