how to indicate page number in cross section line and cross section view by manual or auto as shown in the pic below or any other possible way.
i am using pro-e WF3.
Are you ASKING how you would do this parametrically? If so, to my knowledge, you can't do it easily. That would be a really nice enhancement to drawing mode.
I don't know if this is a standard convention according to ISO, JIS or ANSI. It is a good idea but I suspect you will have to do this manually for some time to come.
I believe there was a way of doing this by splitting your drawing sheets into zones, but it was such a pain and the fact that the zones didn't match what the drawing format zones meant that nobody uses it.
That would be a GREAT and long-overdue upgrade.