Exactly. You can even markup math using Unicode. Here is Stokes' Theorem: \[ ∫_Σ ∇ ⨯ 𝐅 ⋅ dΣ = ∮_{∂Σ}𝐅⋅d𝐫 \] That will turn into a typeset version when run

Exactly. You can even markup math using Unicode. Here is Stokes' Theorem: \[ ∫_Σ ∇ ⨯ 𝐅 ⋅ dΣ = ∮_{∂Σ}𝐅⋅d𝐫 \] That will turn into a typeset version when run through LaTeX (using the unicode-math package). More details at https://lwn.net/Articles/657157/ https://lwn.net/Articles/657157/. Also, any format except PDF is problematic. PDF is the only (widely used) format that will preserve formatting.