Word 2000:

When I copy a section of Doc1 into a blank Doc2, a tab stop
appears in every paragraph of Doc2 at 0.63 cm. This tab stop
did not exist in Doc1. (The paragraphs are outline numbered, if
this makes any difference.)

Why does this tab stop appear?
How can I prevent it from appearing?
Why does Find&Replace not find a tab stop at 0.63 cm and replace
it with nothing?

TIA
Geoff