Your image seems to be cropped on the right.
For something like this, it would be better to use $\LaTeX$. All of the symbols you need are in the "Set Theory/Logic" section of our "Quick $\LaTeX$" element:
[table="width: 200, class: grid"]
[tr]
[td]Command[/td]
[td]Output[/td]
[/tr]
[tr]
[td]\lor[/td]
[td]$$\lor$$[/td]
[/tr]
[tr]
[td]\And[/td]
[td]$$\And$$[/td]
[/tr]
[tr]
[td]\lnot[/td]
[td]$$\lnot$$[/td]
[/tr]
[tr]
[td]\iff[/td]
[td]$$\iff$$[/td]
[/tr]
[/table]