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Open your Nisus New File (dot file) to edit it.
Set the zoom level you want.
Save the dot file.
Nisus New File can be edited from Preferences=>New Document=>Advanced=>Edit File... Then every new file you create will open with the new zoom level.

If you are using a demo of Express, you may as well try the public beta of Nisus Writer Pro which has many more features. It will outlive the demo of Express:
http://www.nisus.com/pro/

Have you added Arabic and Hebrew keyboard layouts from NWE's Preferences=>Languages? You can also set your preferred font for the language.
Once you have done so, select the appropriate keyboard layout for the language.

If you use Firefox and copy the code, the code will execute as it is.
You must have used Safari, I presume; it added spaces, including 2 no-break spaces and a Control character to the code. Removing attributes was not necessary.

Updating to 10.4.9 will not resolve this particular issue. There is a workaround which has been available since 10.4.7 when this problem began, and which can still be used in 10.4.9.
See: http://tinyurl.com/2gn5o6

Nisus Software has given some details about Nisus Writer Pro at:
http://www.nisus.com/pro/

Avery Mac Label Expert is available for free. It can handle the tedious task of creating and formatting text for printing sticky labels.
There is a a well written user manual and templates.

http://www.avery.co.uk/uk1/downloads/maclabelexpert.jsp

If you press Enter, the line on which the cursor is hiding becomes highlighted momentarily.