Trailing sign format strings
| Sub-String Name | Sub-String Value | Positive | Negative |
|---|---|---|---|
| Trailing-Sign | "T" + Positive + Negative + Zero(1) | Req | Req |
| "T" + "[" + Positive + "]" + Negative + Zero(1) | Opt | Req | |
| "T" + Positive + "[" + Negative + "]" + Zero(1) | Req | Opt | |
| "T" + Positive + Zero(1) | Req | - | |
| "T" + Negative + Zero(1) | - | Req |