shows value number of lines of context, before and after each difference between two files. si difffiles marks lines removed from the first specified file with -, marks lines added to the second specified file with +, and marks lines changed in both files with !

controls whether to ignore blanks when comparing text files. When --ignoreBlanks is used, all differences involving blanks are ignored except blanks at the start of a line. These are treated differently than blanks between other characters. The following pair would be considered different, for example, because of the leading blank:

controls whether to ignore case when comparing files.

controls whether to ignore white space at the end of each line (except the newline) and treat all consecutive strings of white space elsewhere in a line as equivalent (effectively, reducing all strings of white space to a single space for the purpose of comparing lines).

specifies the character encoding to use for the revision contents in the GUI, and can only be specified with the -g option. Windchill RV&S automatically decodes UTF-8 revision contents based on the presence of a byte order mark (BOM) in the file. You can set character encoding preferences for each view and command through your client preferences. The preference setting is used if the character set cannot be determined through the file’s BOM, or if no character set is specified in the command line. By default, the character set in the preferences matches the default character set provided by the client’s operating system locale. The option does not apply to pure CLI output, or third party merge and/or differencing tools. Possible values are:

identifies the two files you want to compare.