->Choose one of two;

I'll make each **_d.htmls from the each **_d.txts

I'll make one gathered html from some **_n.htmls;this means,
at first,the 1st index-name of **_n.txt is called and then the entire page of **_d.txt is converted to **_d.html.So,for example,all information about the entity HYPERTENSION can make a one page.