Based on what I learned there I think I've solved another puzzle - non-standard envelope sizes.
And by extension, non-standard paper sizes.
I have a stock of cards & envelopes. The envelopes are 21cm x 10.5 cm, slightly smaller, by about one centimetre, than my regular envelopes.
My macro to print envelopes works fine, except for these weird-size enevlopes; they print offset horizontally.
I seem to have solved the problem by cloning a printer (Start, Settings, Printers, Add printer) just as I did for 2-up and 4-up pages per sheet printing.
In this case I went into (HP2600N laser)
- Printing Preferences
- Paper Quality
- Size
- Custom
- Set size to 21x100.5 cm