The DP4 configuration file may contain comments. These consist of text explaining the purpose of a statement. Comments are not processed. Any part of a line that follows a semicolon (;) is treated as a comment.
If you add a line to a .INI file, an explanatory comment may prove helpful to others who may edit the file and indeed to yourself if you need to edit the file some time later.
You can prevent the execution of a line by inserting a semicolon at its beginning, so that the whole line is treated as a comment. This is an easily reversible way of investigating the effect of removing a line.