Option A Getting Started Guide
Option D with Control Center User Guide
Options D and O Spreadsheets User Guide
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The last part is the extension of ".txt" ( Option A or C) or ".xls" ( Option B), which identifies the file as text or an Excel file.
If you are using Option A and save a Form 26 file in a folder already containing another Form 26 file and both files have a Certification ID number of C1234567, the file would be named PC123456701.txt.
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