What is the meaning of Write_up?

Used other than figuratively or idiomatically: see write, up.

To produce by writing.

To document officially the faults, offenses, or wrongdoing of.

To write about positively; to praise in writing.

To make an upward adjustment in the value of an asset.

To annotate a stamp album page with details about the stamp, such as die used or colour variety.

Source: wiktionary.org