[DEL] Delete Characters

The [DEL] token allows you to specify that characters to the left, or right, of the token should be deleted.

The use of the token is as follows:

[DEL:direction:size]

Where the values for direction have the following meaning:

L	Delete to the LEFT (similar to the Backspace key)
R	Delete to the RIGHT (similar to the Delete key)

Where the values for size have the following meaning:

1 -> 999	Delete the corresponding number of characters
0	Delete all characters until the beginning of the textbox (with L) or to the end of the textbox (with R)
-1	Delete as many characters are needed to get rid of text overflow (does nothing if there is no text overflow)

Note that return characters are counted as only one character each.