By default, the pages will be rotated automatically based on the text content in the document. However, you may want to change this default behavior from time to time. Sometimes the program cannot find any text to base the decision on. It can also be the case that you have multiple lines of text written at different angles.
You can change the default rotation options on the “Other” tab in the Options dialog.
You can experiment with these settings to get the result you want.
If the text in your document is printed as graphics it cannot be used by the program to determine the orientation.