This section includes all the other I/O functions which don't fit well into the other sections. Specifically, these functions cannot be used when compiling external programs that utilise the gap4 I/O functions. The reason for this is that they require many other portions of the gap4 objects which in turn require more.
Whilst it is possible to still link in this manner, it is unwieldy and far from ideal. If you have need to use any of these functions in code that is to run separate from Gap4 then please mail us. We will then investigate tidying up the code further to aid such compilations.