Dear Rudolf,

Please accept my thanks for your kind and prompt reply.

I still have some queries, which I provide inline as well as in the end.

Rudolf Adamkovič <salutis@me.com> writes:

> Partha Pratim Ghosh <ghosh.parthapratim.unisa@gmail.com> writes:
>
>> #-*- mode: org -*-
>
> FYI: You do not need this line if the file has an '.org' extension.
>
>> #+TITLE: test
>> #+AUTHOR: Partha
>
>> #+latex_header:\usepackage{Documents/tex/essentials/symbols}
>
> Note that this header applies to LaTeX and will not work with MathJax.
>
> You can make Org to use actual LaTeX in HTML by adding
>
> #+OPTIONS: tex:dvisvgm
>
> to your document.
>

Thanks; this suggestion worked --- at least the xymatrix figure came
out; however, the arrow was almost not present: