You can easily assemble a spreadsheet application. The hard part is making it understandable to other people. You must thoroughly document your work. Doing so helps you if you need to modify the application (and you will), and it helps anyone else who needs to work on the application (after you get that big promotion).
How do you document a workbook application? Store the information in a worksheet or use another file. Use a paper document if you prefer. Perhaps the easiest way to document a workbook application is to create a separate worksheet in which you store comments and key information about the project.
Use comments liberally throughout your VBA code. An elegant piece of VBA code may seem perfectly understandable to you today — but come back to it in a few months and you may be scratching your head.
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