The summary document of the month, such as receipts, purchase orders, work orders, which concludes this month is similar to a book's table of contents to locate the document in the file.
Made a brief period documents such as receipts, purchase orders, which is similar to the monthly statement. Contents of the book Help find the documents in the file easier.
Do the monthly document summaries, such as receipt orders, work orders, which leaves the ประจำเดือนนี้ is similar to the table of contents of the book, help find the documents in the file easier.