Of course more than one note can be played at a given time, hence chords. When more than a single note are played at the same time, the unison sybols are used: [ and ]

X: 1
| [CEG] C [DFA] D | [CEG] E [DFA] C | 

There should be no space between the chord notes.

All notes should be the same lenght; if they aren’t, the chord is supposed to be as long as its first note.

Of course duration modifiers can be applied to the whole chord, and they must be multiplied with any eventual duration of single notes.

X: 1
L: 1/4
M : 4/4
| [CEG]4 | [C2E2G2] C | [C2E2G2]2 |