Dashes not allowed in pages? - SSU module

Trying to create a new page as described here:
http://www.zen-cart.com/wiki/index.php/Creating_new_pages

Everything seems to go well except I tried to name one page with dashes in it ie: 'tax-info'

This didn't work for some reason. Yet underscore works fine 'tax_info'

I would prefer to use dashes over underscores. Is there something I'm missing or did I just hit another Zencart quirk?

I would prefer to use dashes over underscores. Is there something I'm missing or did I just hit another Zencart quirk?
I do not believe this is only a ZenCart item

Just an update... This seems to be a problem/feature with the SSU module.

llynix:

Trying to create a new page as described here:
http://www.zen-cart.com/wiki/index.php/Creating_new_pages

Everything seems to go well except I tried to name one page with dashes in it ie: 'tax-info'

This didn't work for some reason. Yet underscore works fine 'tax_info'

I would prefer to use dashes over underscores. Is there something I'm missing or did I just hit another Zencart quirk?

This is a problem that is caused by "loosely typed" languages such as PHP.

In simple terms, "tax_info" is being treated as a string, but 'tax-info' is being treated as a mathematical operation on 2 numeric variables.

Spaces in filenames should also be avoided for similar reasons.

There are ways to overcome the problem, but as a general rule it is best to avoid them in the first place.

Cheers
Rod