"try"ing to understand condition handling

Since you have not told us what 'the documents' are (and only vaguely
named one), do you not think your own documentation is inadequate?

There are documents about the condition system on developer.r-project.org:
please consult them.

Where exactly?

I tried:

 * reading http://developer.r-project.org/, but couldn't see anything
obvious, and there certainly isn't anything in the pointers section

 * using find on that page to search for "condition", "try"

 * using the google search with keywords: "condition system", "try catch", "try"

Perhaps you could provide a more explicit reference?

Hadley