SearchByRegex: True if the find value is a regex. The regular expression and replacement should follow Java regex rules at https://docs.oracle.com/javase/8/docs/api/java/util/regex/Pattern.html. The replacement string is allowed to refer to capturing groups. For example, if one cell has the contents "Google Sheets" and another has "Google Docs", then searching for "o.* (.*)" with a replacement of "$1 Rocks" would change the contents of the cells to "GSheets Rocks" and "GDocs Rocks" respectively.