NatLabel 1.1

NatLabel is a Windows GUI application for converting numeric referbacks in Natural source code to statement labels NatLabel is a small but useful Windows GUI application for converting numeric referbacks (line number references) in Natural source code to statement labels.
It operates on plain text downloaded source code files where each line contains a 4-digit sequence number, a space, then the source statement.
This program converts numeric referbacks in a Natural program into alphanumeric labels, and inserts each label against the appropriate statement.
It puts the Natural source into a read-only richedit control , and repeats every referenced and every referencing line in a grid below. Clicking on any cell puts the referenced line number into an edit box, where the user can overtype with a label.
As soon as the label has a valid format, an "Apply" button activates, and pressing it propagates the label throughout the richedit above. These are the only changes that can be made to the source code.
The whole process can be automated, for each label individually or for all labels, by supplying a conversion profile that holds a series of templates for each statement type which can be labelled.
The program will accept one (optional) command line parameter containing the name of a plain text file containing the Natural source code.
This enables it to be used in tandem with a pair of download/upload Natural source modules on a mainframe.
The download module can write a PC workfile containing the Natural source to be modified, then pass the name of the workfile to this program so it can open with data in place.