Please tell me the proofreading mark for "Write out in full."

Proofreading marks are very specific and well defined.
There are twenty-six well known proofreading marks. The mark indicating that something
in a text needs to be written out in full is identified as the "Spell out an
abbreviation or a number" mark. It may be confused with the "Reconsider word choice"
mark or with the "Check the spelling of a word" mark. You can see that though these may
seem similar, each has a very specific and well defined
function.

To make the "Spell out an abbreviation or a
number" mark, or symbol, which may also sometimes be called the "Write out in full"
mark, or symbol, you simply draw a distinct and neat oval around the abbreviation or
number in question that needs to be written out. The oval will be widest from side to
side regardless of the size of the abbreviation or
number.

This symbol may be confusing because it is
identical to the "Abbreviate a word" symbol: both symbols are an oval. What
differentiates the one from the other is that the one oval encloses an abbreviation or
number that must be written out in full, while the other oval encloses a fully written
word (or number) that must be abbreviated (or written as a
numeral).