CONCAT Version 1.3 Release Note If the I option is used, IT MUST BE THE LAST OPTION ON THE COMMAND LINE. All characters following the "I" are used as a divider string. To use the internal default divider string, the "I" MUST BE THE LAST CHARACTER ON THE COMMAND LINE. Although CONCAT has many command line and configurable options, it may be easily used to concatenate text files with no more instructions than typing "CONCAT" at the system prompt to check the command line syntax. However, to take full advantage of CONCAT's many options and features, especially the O, A, and I options, you are encouraged to read through the documentation file.