HP NonStop G-Series - Manual (Page 255)

EDIT Files
Handling Your EDIT Files
058061 Tandem Computers Incorporated 6–5
See Section 5, "Range Summary," for an introduction to ranges.
You can run out of line numbers. For example, if your text is numbered:
23.101 When widows exclaim loudly against second marriages,
23.102 I would always lay a wager that the man,
23.103 if not the wedding day,
23.104 is absolutely fixed on.
and you want to add text between line number 23.102 and 23.103, you
cannot do it because there is no line number available. When this happens
to you, you must renumber your EDIT file. (See the NUMBER command in
Section 4.)