Split text Ry at or near column Rz and load
into Rx. wraptext: will split the text on the word boundry closest to
the specified column. See wraptext.ata for an example on useage.
Parameters:
Rx: A string register that contains the
formatted text.
Ry: A string register containing
the string to format.
Rz | column: A numeric register or
constant
that contains the column to split lines.