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            \type{--}: \mathematics{    \nabla \phi = ∇ ϕ = 0}
            \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0}
            \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0}
            \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0}
            \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0}
            \blank
            \type{--}: \mathematics{    \mathgreekupright \nabla \phi = ∇ ϕ = 0}
            \type{it}: \mathematics{\it \mathgreekupright \nabla \phi = ∇ ϕ = 0}
            \type{bf}: \mathematics{\bf \mathgreekupright \nabla \phi = ∇ ϕ = 0}
            \type{bi}: \mathematics{\bi \mathgreekupright \nabla \phi = ∇ ϕ = 0}
            \type{tf}: \mathematics{\tf \mathgreekupright \nabla \phi = ∇ ϕ = 0}
            \blank
            \setupmathematics[sygreek=italic]
            \type{--}: \mathematics{    \nabla \phi = ∇ ϕ = 0}
            \type{it}: \mathematics{\it \nabla \phi = ∇ ϕ = 0}
            \type{bf}: \mathematics{\bf \nabla \phi = ∇ ϕ = 0}
            \type{bi}: \mathematics{\bi \nabla \phi = ∇ ϕ = 0}
            \type{tf}: \mathematics{\tf \nabla \phi = ∇ ϕ = 0}
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