is valid?      

Text formatted with Texy:

tento text ma byt uprostred

ale tento uz zpet v levo

Generated HTML code:

<p style="text-align:center">tento text ma byt uprostred</p>

<p style="text-align:left">ale tento uz zpet v&nbsp;levo</p>

Verze Texy: 3.2.1 (konfigurace)