Add Source Change Mark column to Source Physical Files to promote move to **FREE and preserve historical metadata

With the addition of **FREE support for RPGLE, the prior use of columns 1 - 5 goes away. However, the vast majority of developers use these 5 characters to put a 'change mark' to tie source code changes back to a project or reason for the change.  Tying changes back to projects and often regulatory mandate for change is often done in the insurance industry (and I am sure other industries as well).  The 'change mark' is not a functional part of the source code, but rather a meta-data "key" to an often much larger, external set of data.  It does not lend itself well to placing at variable positioning inside a source code line.

It would be greatly beneficial to add a 5 character 'change mark' field to source files on the IBM i. This new, metadata element would go hand-in-hand with RPGLE developers embracing the **FREE format. As a metadata element, it makes the source code more intelligent.  Losing this tie back to enterprise level project data discourages RPGLE developers from moving existing source code forward to **FREE.  Suggestions that RPGLE developers move forward without this meta-data element are quite literally missing-the-mark.  Suggestions that RPGLE developers all move to IFS and GIT without the Source Change Date, Line Number, and Change Mark is to ignore the "Advanced System" element of the systems design.  

Source code editors could make the additional field available to developers so they do not lose the source code change management value that columns 1 thru 5 provided prior to fully **FREE format RPGLE.  

The field could be named SRCMRK, since developers refer to the value in positions 1 - 5 of RPGLE as the 'change mark'.