Table of supported annotations

You can use nag command with both string in ISO and UTF column from the following table. The result is the same.

┌──────────────────────────────────────────────────────────────────────────────────────────────────────────┐
│ NAG  │ ISO  │ UTF │ description                                            │ note                        │
├──────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ $1   │ !    │ !   │ good move                                              │ SAN move suffix annotations │
│ $2   │ ?    │ ?   │ poor move or mistake                                   │ SAN move suffix annotations │
│ $3   │ !!   │ ‼   │ very good or brilliant move                            │ SAN move suffix annotations │
│ $4   │ ??   │ ⁇   │ very poor move or blunder                              │ SAN move suffix annotations │
│ $5   │ !?   │ ⁉   │ speculative or interesting move                        │ SAN move suffix annotations │
│ $6   │ ?!   │ ⁈   │ questionable or dubious move                           │ SAN move suffix annotations │
│ $7   │ []   │ □   │ forced move                                            │                             │
│ $9   │ ???  │ ☠   │ worst move                                             │                             │
├──────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ $10  │ =    │ =   │ drawish position or even                               │                             │
│ $13  │ ~    │ ∞   │ unclear position                                       │                             │
│ $14  │ +/=  │ ⩲   │ white has a slight advantage                           │                             │
│ $15  │ =/+  │ ⩱   │ black has a slight advantage                           │                             │
│ $16  │ +/-  │ ±   │ white has a moderate advantage                         │                             │
│ $17  │ -/+  │ ∓   │ black has a moderate advantage                         │                             │
│ $18  │ +-   │ +−  │ white has a decisive advantage                         │                             │
│ $19  │ -+   │ −+  │ black has a decisive advantage                         │                             │
│ $22  │ (.)  │ ⨀   │ white is in zugzwang                                   │ Default for black move      │
│ $23  │ (.)  │ ⨀   │ black is in zugzwang                                   │ Default for white move      │
│ $26  │ ( )  │ ○   │ white has a moderate space advantage                   │ White moves only            │
│ $27  │ ( )  │ ○   │ black has a moderate space advantage                   │ Black moves only            │
│ $32  │ @    │ ⟳   │ white has a moderate time/development advantage        │ White moves only            │
│ $33  │ @    │ ⟳   │ black has a moderate time/development advantage        │ Black moves only            │
│ $34  │ >>   │ ↑↑  │ white has a decisive time/development advantage        │ White moves only            │
│ $35  │ >>   │ ↑↑  │ black has a decisive time/development advantage        │ Black moves only            │
│ $36  │ >    │ ↑   │ white has the initiative                               │ White moves only            │
│ $37  │ >    │ ↑   │ black has the initiative                               │ Black moves only            │
│ $40  │ ->   │ →   │ white has the attack                                   │ White moves only            │
│ $41  │ ->   │ →   │ black has the attack                                   │ Black moves only            │
│ $44  │ =/8  │ =/∞ │ white has sufficient compensation for material deficit │ White moves only            │
│ $45  │ =/8  │ =/∞ │ black has sufficient compensation for material deficit │ Black moves only            │
│ $132 │ <=>  │ ⇄   │ white has moderate counterplay                         │ White moves only            │
│ $133 │ <=>  │ ⇆   │ black has moderate counterplay                         │ Black moves only            │
│ $138 │ (+)  │ ⨁   │ white has severe time control pressure / zeitnot       │ White moves only            │
│ $139 │ (+)  │ ⨁   │ black has severe time control pressure / zeitnot       │ Black moves only            │
├──────────────────────────────────────────────────────────────────────────────────────────────────────────┤
│ $145 │ RR   │ RR  │ editorial comment                                      │                             │
│ $146 │ N    │ N   │ novelty                                                │                             │
└──────────────────────────────────────────────────────────────────────────────────────────────────────────┘