What the /Range commands do

The Range commands affect a single cell or rectangular group of adjacent cells.
Erase
Erases cell contents.
Value
Convert the values of expressions to their result.
Copy
Copies the contents of the source range into the destination range.
Fill
Fills all cells in a range with a certain value.
Define
Assign and use a name for a group of cells.
Show
List the currently defined range names.
Undefine
Delete a previously defined range name from the list of defined range names.