Can you use short bond loss against short term OID "interest"

[jdxray]

Fidelity, on its tax reporting page for planning purposes, calculates one's ongoing short and long term losses over the year and includes OID gains there rather than in interest income, where realized OID gains are generally reported. I have seen some sites where OID gains on bonds, in my case Treasuries, can be reported as short or long term capital gains- for example on Fastercapital.com

However, it's not clear to me whether this is actually true; if it is how would one report in TT the offset of short term loss of sales of T bonds/notes against the OID of short term matured gains. IRS Pub 1212 is not helpful on this point. 

Thanks