Rename Dialog for a Variable
Use this dialog to rename a variable.
In addition to renaming the variable itself, IntelliJ IDEA can also look for the usages of the variable name. If found, the changes you are making to the variable name can also be applied to these usages.
The usages are assigned to different categories which correspond to the options which you can turn on and off.
Note that regardless of the options selected, the search scope (that is, the places where the name occurrences are looked for) is always limited to the current entity (file, class, etc) and the entities that the current one depends on.
Rename <variable> and its usages to
Specify a new name for the variable.
Search in comments and strings
If this checkbox is selected, IntelliJ IDEA will look for occurrences of the variable name within comments and string literals in your source code files.