Patching calls.texinfo

[Nicholas Wourms]

Hi,

To be quite honest, I'm not familiar with the numbering 
schema in calls.texinfo for the C standards.  I wanted to 
submit a patch for isblank(), which falls under the same 
standard as isalpha() & friends.  Although isblank() and 
isalpha() are listed in The Open Group Base Specifications 
Issue 6: IEEE Std 1003.1-2001, I cannot find any reference 
to the numbering, which is used in that texinfo file, on The 
Open Groups site.  Can someone give me a hint so that I 
might submit a proper documentation patch?

Cheers,
Nicholas